I've been reading this thread with a lot of interest since my say earlier in the thread. I've been a custom painter since I was 20. I have used and experimented with all kinds of stuff to strip with. While it has been interesting to read what others use, these are what has worked best for me.
1. Media Blaster. Loaded with baking soda for plastics, Aluminum Oxide for metal.
2. Lacquer thinner for metal (if unable to use media blaster)
3. Scalecoat Washaway. (If unable to media blast)
Denatured Alcohol This is in a category all its own!
As much as I loved this stuff, (except for lacquer thinner, it was at one time the only stripper I used), it has become too varied in what it can and cannot strip. I do still use it to wash resin kits in after assembly to remove any residue left on the model from the molding process. While it will still easily strip any of the American made models, from Accurail to old BB. (I still recommend it for these). However, for anything made overseas, it has become too hit and miss.
These didn't give me "their best".
1. Brake Fluid- With all the different plastic formulas out there now, you will never know what this will do to a plastic body. I have seen it turn plastic bodies brittle, permanently bendable, and into a pile of mush.
2. 99% Isopropryl. Some paint batches strips extremely well, but others, hardly touches, basically too spotty.
3. ELO-Too spotty in action, as with the 99%.
4. Easy off-While it stripped the paint quite well, it left a residual smell, for a couple of months.