Hard question, it depends. Somtimes when I play a Dream Theater our Mamlmsteen solo, some people (most people actally) don´t find it good but when I play GNR our Metallica stuff the find it very cool. Playn´ somthing by Satriani can be very good ´cause his stuff is in the midle of Guns and Dream theater (somtimes emotional, somtimes fast, somtimes difficult). For The Love Of Good by Vai is also cool.