Re: Painting guitars
I currently use a Devilbiss I got from TCPGlobal for like $120 or so? It came with 2 guns, and sprays my clears like glass, base coats, and primes! They definately work great - but I also have never used anything else. I'm sure if I played with a $500 SATA I'd know the difference.
The big question here is : Do you have a compressor powerfull enough to run an HVLP. When I got mine, the CFM requiremetns for my HVLP pretty muich required a 60 gallon compressor. Ic ouldn;t find anything smaller with the output necessary to run them.
A touchup gun probably won't spray your clear as nice either. I use a regular size, and when clearing, I have that sucker mostly full of clear. I like to really lay it on. You will be limited with the touchup gun - you could always mix up more, but if you run out mid spray - that sucks.
Then after you clear it, paint it etc. you have al lthe different sanding, cutting, buffing, etc. that needs to be done. This stuff isn't cheap.
If this is a one-off your going to do - it would probably be cheaper for you to have someone do it for you...
Just my opinion - I was once where you were, and now here I am thousands of dollars later, able to do it! Aside from thousands of dollars, lots of instruction too from a local painter.
Hope this helps some. Feel free to ask me anything else - I can give you some good info.