Hello all!

I'm looking into building my own rep-rap type printer and would like your opinion as to which model is your favorite.
These are my criteria:

1. Downloadable parts files
2. Cost ; $300 to $500 or less for the parts,electronics, software, etc..
3. Sturdy, rigid construction.
4. Ease of construction.
5. I want it to print as large as possible, dependably as possible, as cheap to build as possible

These are some of the shop tools I have...
4x8 ShopBot CNC router
Drill press
Electric Mitre Saw
Mig Welder
soldering tools
cordless drill


I was thinking of going with a ''Mendelmax'' as I could cut the 1.5'' extrusions with my mitre saw. Or would you recommend a Prusa, or something else? My cousin offered to print the plastic rep rap parts. But are kits available which have all the electronics, timing belts, bearings etc? I'm a ''beginner'' to 3D printing but have some experience with CNC building. This is the controller I created for a hot-wire foam machine... https://www.facebook.com/photo.php?v...type=2&theater
Thanks for your help.