heres my situation. ive got about 600 dollars canadian.. ive got a heavily used yorkville 4x10 that i might get 200 - 250 for. by christmas..ill have made another 300 - 400 dollars, so thats around 1100 dollars. now i've decided a 4x10 just isnt powerful enough for me. so should i look for a used ampeg 6x10, or pickup a 4x10 and 2x10.. and what companies should i really look for, i know GK, SWR and Ampeg are all top of the line, but i must admit that i've never really played on one. should i stick with yorkville. 1100 dollars, what can i do with it?