There seem to be a lot vendors that are creating systems for Guitar modelling and digital effects. These are in amps as well as standalone "boxes". I would like to see you to review some these like the POD X3, POD X3 Live and the Line 6 Spider amps. It would be interesting to see some comparisons of like products: Guitar modeling Amps vs. other modeiling Amps or two Effects and modeling boxes or modeling Amps vs. the pre-Amp modling boxes ...