SERIOUS 20/10. This thing is incredible. It's convincingly analog without unwanted hiss or noise. The pedals have real analog noise hiss and latency. All the amps are realistic. There are different amp setup combos to choose from. There are many mics to choose from each do their duty as well as the program itself which is truly amazing in itself. I suggest you read the manual at Waves.com to see what this baby can do. Listen to a demo, you'll be surprised. This is the best deal going and also to say the least, the best Guitar program out by far in my opinion.
GTR3 is indispensable. I get pro sound, huge sustain. Theres, reverb amp, head amp all these cool amps. Some amps are bluesy rock, many are heavy metal. Bass amps and some Neil Citron for that old school stuff. All have class and are not brown or muddy. They color well. I particularly like the bluesy style amps and they get super heavy and distorted like I like them to. These amps i'm calling bluesy aren't any wimpy watered down amps by any means. They are heavy. Very heavy.
This plugin has frozen my computer before after using over 14 pedals. I have a DELL XPS 8500. I-3770 quad core. 12 GB RAM. TC Electronic Impact Twin audio interface. I have an electric guitar with high power dual and single coil humbuckers combo. The highest I could find at Dmarzio.
Even though I have 510 and 385 humbuckers. I would say the heavy metal amps are too loud for my setup. Too much sustain. It goes forever. My recommendation is you pick you amp first then your pickups. The amp has the most tonal qualities.
I would only recommend this GTR3 for a serious guitarist. And I would highly recommend this inexpensive GTR3 for anyone wanting to hear what expensive amps sound like.