I just finished thiis one. I think that it sounds very good but i can't recommend anyone else to try building one since this one was my second attempt (the first one didn't work at all) and this second one required a couple of mods to make it work!) They suggested two TL072's and a TL062, but it works and sounds much better with three TL072's. Second (and this is a must do mod!) the master volume pot doesn't work properly if built stock. There's DC on it (DC static) and it worked up until half way and got quieter as you turned it up. I ended up cutting the input leg on the pot and added a 1uf film capacitor between the PCB and the pot and it works perfectly now.
pics of the build below:
gut shot:
pics of the build below:
gut shot:
