I've got one, like others have noted, it's a fine machine. Post flow is less of an issue than others make of it, and it works great in my garage! I built my welder cart for my SW200 and 210MP. I'm not anywhere in the same field as Jody or Paul but it works for me!
I use some 1/8" closed cell foam from Rammaat that's normally used for sound dampening in cars. It's available either in pieces that are self adhesive or non stick. It's soft so the tools slightly dimple the surface but it's black in color, and I'm pretty sure it's made in the USA!
I use some stuff called Ensolite, its a closed cell 1/8" foam that will deform slightly from the weight of the tool. I buy it from Raammat from there site. Easy to cut with scissors or a razor knife and you can get some with an adhesive back or plain.
I have a Marson and at one point bought a HF mainly to do some 1/4-20 and it was junk. It broke on the second one and left me dead in the water until I could get the arbor for my Marson to come in. If I didn't have a good tool then the HF piece may not be that bad but it's a far cry from a good one.
I paid $1400 for mine in pretty good condition, though it's PJK and orange wasn't my first choice. I use at my home garage and think it's a great box for the money.
I second (or third) a Marson. At one point I misplaced my 1/4-20 arbor and bought a HF one and broke it on the first try. Horrible design and cheap materials. Get a quality one that will last.
I've got an original PP mine doesn't have a positive or negative trigger as well as a PPIII that both work as expected. I wouldn't hesitate to recommend one to anyone getting into 12V electronics. I don't have any experience with the hook, but I would guess it works as expected.
My LWS said it would be in the second week of November. I'm anxious to see one and potentially buy one. I don't need a huge machine but I would like the ability to MIG and TIG in one machine.
I've got an original power probe as well as a power probe 3. The original is cool because it's a simple two light (12v/ground) but the think I like most is the thin probe. It's somehwere around the size of a mechanical pencil lead (likely .5mm) and it has an extra long one for harder to reach...
I would look into some sort of rhino lining or line x type of product to seal it all in together. I haven't done it and don't know if this would something I would DIY or pay a pro but at least if it's done correctly it should seal the entire surface in one piece.