good cheaper aftermarket tunes for 1.8t?
 

Ok, so I've heard of APR and Unitronic, but both of those are really expensive. given you may get lots of added on features, but I am just looking for a little bit more out of my B6 style A4. I'm sure there are plenty of aftermarket tunes, but which ones are either download and DIY upload to the ECU, or have more than like 3 distributors nationwide?
So basically, which tunes are prevalent enough to actually go get either online or without driving like 80 miles, that aren't quite as pricey as APR and Unitronic? But also are reliable and safe? Thanks!