Please please please DO NOT buy Behringer Truth speakers. It'd be a huge mistake. I dont know if you've read my thread about my experience with these speakers. I'm still going through the hassle of it all. They are simply not reliable. I'm just about to send the faulty one back to the suppliers in Germany for the second time. Behringer actually returned the speaker to me (via suppliers)in the same condition I sent it out in! Unbelievable but true. I only had it for a few weeks.
A friend of my bought Alesis speakers and seemed pretty happy with them. Best to talkto someone that has used them or better still, try them out yourself.
Good Luck.