Ok 1st off i want to thank you for taking time to look at this post and hopfuly helping me get the answers i need. ok my 1st quesion is, is it worth it did ui like it? these next to are the 1's i really need help with. 2nd i heard somthin about a memory card or somthin is it requrierd to run the gnx3 or is it opptional if it is opptional wat dose it do? and finaly wat all cant the expression peddal do? dose it have a whammy pedal feature? if u no the answers to any 1 of these plzzzz reply or even if u dont no for sure all replys are excepted.