I also been thinking about getting one as well but sitting on the fence to first rationalize it.
The blind hole puller would be great if you were also able to use dowel pin holders with the puller to pull those pesky pins that don't want to come out.
Rent one for free at auto zone. I did when I pulled inner cam bearings out of my Harley motor.
Never had ANY luck with the old grease trick, so I got the HF unit. Works good for a rarely used but very useful tool!
Use bread. Seriously, works well and simpler than grease.
Once had a guy get a spark plug socket stuck in a 5.4L Triton. He stuck a normal 5/8 down the hole, and got it stuck, not knowing it was a 14mm. Slide hammers on locking extensions, all the tricks failed.
1/2 loaf of white bread and an extension to jam it in, removed the socket. Bread is also easier to clean in some situations.
I would like to see a video of that.
One slick way to do it is to drop a ball bearing in the hole, then adapt an appropriate size tap to your impact wrench, start threading the tap into your bushing, and when it hits the ball bearing it will walk the bushing right out. It was one of those ah-ha moments when someone showed me how to do this.
Also it should be noted that anyone who suggests pullers from harbor fright is not credible.

You might be onto something since I restore swiss made machinery (Tousdiaman, Schaublin, Sixis, Emco....etc) working in .0001" tolerances. I have the HF separator and use it on occasion when my other pullers (USAG, SKG, Hazet) don't work and it has worked just fine (in all honesty, I am surprised).
The best thing to do is evaluate the right tool for your projects, the amount of use and cost benefit. The HF one would be for the occasional user and about 70% cheaper than the S-O Taiwan version, so one should not be confused about the parity of the two, it's already implied. If you want to talk about quality, S-O doesn't makes there own, it's a relabeled tool that's most likely now made overseas with lesser quality than the ones made 30 years ago and you're mostly over paying for the warranty that is typically only useful to mechanics at dealerships that the S-O trucks rely on for income so they stop by often and give you less hassle about warranty.
If you want to talk about excellent quality tools then you should instead mention SKF, Kukko, Timken, Gedore and Hazet pullers but they're not available on mechanic S-O trucks. There's also other really good small companies that make high end pullers that easily rival what S-O offers, not saying S-O is bad, just don't think there the best or only the best. Check out Kukko series 28, SKF TMIC, Gedore's Tin coated internal extractor sets (blind hole puller).
Here's SKF's, which hands down I would rather use than S-O's:
https://www.skf.com/us/products/maintenance-products/mechanical-tools-for-mounting-and-dismounting/bearing-pullers/internal-pullers
I make custom made fasteners and parts to fit the machines above that we restore and then have them sent out to get hardened with our custom hardening specs so I may not have much creditability.
So the Snappy collet and slide screw I bought from Snap On last year aren't made in the US even though their website says the COO is USA and it is stamped USA on it?
And who actually makes the Snap On blind bearing puller set, if as you say Snap On doesn't make it?
Oh and FYI, the Snap On collet and slide screw that I bought last year are of the same quality as the 30 year old pieces that are in my set.
I rarely use a blind bearing puller so I was not spending $160 for the OTC kit. I ended up getting this kit from amazon. Its not the best, but I had zero issues with it the 3-4 times I used it. Last time I used it, I needed to pull my pilot bushing. I lightly tapped the adapter in and had to use the threaded puller as the slide hammer was not heavy enough to remove the bushing. Made removing a pilot bushing on my sbc a piece of cake.
https://www.amazon.com/gp/product/B01N4UJFRH/?tag=atomicindus08-20
Example and no Snap-On doesn't make their own USA versions but glad you like yours and impressed with it.
https://shop.snapon.com/product/sup...shing-and-Bearing-Puller-Master-Kit/SIRST9006

Why say they don't if you cannot prove it, one way or another?
You also said they were import yet the ones I bought and have owned, plus their website say otherwise....again please don't write false claims in this site. There is enough bad-info on the 'net, don't add to it. The one you list is a Blue Point/SIR set, not a Snap On set.
The below picture is the Snap On set out of their catalog(not sure why it won't load but page 474 of their electronic catalog will show the same page i listed). The other picture is some of my set to show I'm not lying....just lazy in that I don't feel like walking out there to take a better photo....![]()
[VALLEY GIRL VOICE] Pfft.....you are like sooooo not credible.....that is not a Snap-On or OhhTeeSee.....like, that is soooooooo ratchet [/VALLEY GIRL VOICE]