I once was the proud owner of a Digitech GNX4. It was cool at first, having the onboard 8 track, the drum machine. Being able to use it as a recording device to my pc. But something was missing. The tone. I never could get the tone I really wanted, I tried the discs that guitar3456 sells and these patches were better but the tone was still so digital I couldn't stand it. Another thing with the GNX4 was the fact that the PC would drop the USB connection from time to time right in the middle of a recording session. So, I sold it and bought myself a Boss GT-8. It also has a patch editor for your PC but you have to download it from the boss forums. Some guy made it and it works really well. Anyway, the Boss seems to have better sound, not so digital. I like the fact that it has more effects, like the dynamic picking and such. I also like how it has a seperate effects loop and you can put the effects in any order you like. I'm glad to be a GT-8 owner. The Boss GT-8 beats the digitech GNX4 hands down in my opinion. Someone else here on the forum said this once. The GNX4 does alot of things but none of them really well. So, true.