If you want to save money working on your own personal vehicle, maybe part of the overhead expense of that should be high quality tools - especially jacks and stands.
My joke these days is that DIY for a certain job saves you enough money to buy the same high quality tools the pro's use for said job. It's not really true.... but once you have a decent set of tools... and you are saving $1,000 in labor here and there... it's not outlandish to level up certain tools.
Ultimately, there are two paradigms for DIY.... and a basic tenet of philosophy clearly states you can't argue across paradigms. Some folks DIY to save money.... this is completely different from folks that DIY because they want something broken to fix. Both are completely viable and acceptable.... and, frankly, admirable in this day and age.
If you're into saving money, running the most expensive tools is clearly not in line with that philosophy. If you like fixing broken stuff, you'll level up as you see fit.
I fall into both of these camps. My automotive toolset is almost all metric, and I'm always looking at or shopping for tools. I love working on cars.... I love learning the latest techniques/tools for repair and diag. On the other hand, I get no joy working on my house.... or the lawnmower. I'd rather change a transmission than fix the toilet's fill valve... or rebuild the mower deck..... but I'd much rather DIY than pay someone else to do the homeowner stuff. So, my SAE homeowner set is pretty entry level relative to the garage tool set.
-Ryan