Well as the title states I need help choosing a gun. I know there are alot of these threads, and I have been doing alot of reading on here, but I thought it was best to ask before I bought. Anyways I am just a hobbist/diy guy looking for an affordable paint gun. Me and my friends have been messing around with cars for a long time, engine swaps,turbos etc and just recently got into painting are own cars(haha don't have money for pro job, and like the satisfaction of diy!)and have been using the IR hvlp gun from lowes $100 http://www.irtools.com/lowes/270g.html. Its not a bad gun you all may laugh but we have sprayed with it mettalic silver bc/cc,filer primer,primer, sealer and single stage white all with the same gun and tip(1.5). Actually each one has turned out really good, we have just spent alot-alot of time in preping and finishing, wetsand/buff etc. However now I want to step-up to a better gun and maybe use the IR gun for primer. So my limit on a gun is around $100 but could go up to $150 for a really good deal. The guns I have been looking at are:
DeVilbiss Finishline III Gravity Feed HVLP with 1.3 fluid tip
Code: DEVFLG653G13
Price: $99.50

Astro Gravity Feed HVLP
Code:APGFHVLP
Price: $89.95


Astro LVLP Spray Gun
Code:APEVO4014-18
Price: $75.00

So any suggestions on these guns would be very helpful, or if there is any gun that I have overlooked fill me in on it. Also If any of you have a really good gun but used that you willing to sell that would be better than these for same price I could go that way.

Sorry for the long post I just wanted to give as much info as could!

Thanks
Andy