I am selling off a Nemesis 1x12" combo and putting the ensuing monies (plus around $500) towards a larger combo. I am looking in the sub-$900 dollar range (CDN), and would like some input as to the Yorkville XS400 1x15, the Nemesis NC212 and the new Carvin BR615. I play 4 and 5 string basses, mostly at home or in basement jams with friends. We mostly perform experimental rock and fool around with some jazz and blues. I am primarily a finger player and do not play particularly aggressively, but I do slap occasionally. I have played the Yorkville and liked its sound and power. I haven't played the bigger Nemesis but have owned 2 of the Silver Series and had great luck with them (as well as loving the tone). I have not perchanced upon the Carvin but it appears to be a good deal in a small package. Thanks for any input.