All my basic tools are Craftsman (you can't beat a lifetime warranty). The aircraft tools are mostly from an Avery kit and I went with them for my pneumatic squeezer. Some other tools came from Cleveland and ATS (used to live within driving distance of ATS, which is where I got my flaring tool). All the electrical tools (soldering station, crimpers, etc.) came from Fry's Electronics. And there were a few specialty tools from miscellaneous sources, like the conduit punches which, as I recall, were Greenlee and I found them online.
I built the -6A with mostly hand tools (hacksaw instead of bandsaw kind of thing) but I gradually acquired all the comfort tools. Now that I'm building the -10, I'm finding I don't need them as much but I'm glad to have them when I do run into a place I can use them. In my opinion, the comfort tools are: bandsaw, chop saw, pneumatic squeezer, die grinder, stretcher/shrinker, bench shear/brake, and so on. I still don't have a lathe but I have access to a guy who has along with a CNC milling machine. Don't think I'm being disparaging when I call them 'comfort tools'; comfort is important when embarking on a long project like an RV. I remember cutting the VS rear spar fork doubler from the 1/8" sheet blank by hand with a hacksaw and the using a vixen file to bring the cuts down to the marked line and then a fine file and scotchbrite wheel to finish the part. Took over an hour and I was really sweating doing some of the sawing. Would have taken a few minutes with a bandsaw but I simply could not afford one at first so I had to do without and buy the tools I really needed.