Thanks for all the great suggestions. I just purchased Athena LS-100B to use with my computer at home. I use a sonic impact T-amp. I think they sound great. Not as good as my headphone HD580, but blows away my old computer speaker, I have no other bookshelf speakers to compare though.
Now boss gave me some money to get something for my office. Since I can bring my T-amp to work. I will buy bookshelf but something different, so I am back to another round of search.
Epos may be hard to drive and I don't want to take the chance with my sonic impact. Axiom M3 only has version 2 for $330, a little pricey. I did not choose X-LS because it seems to be out of stock. I also tried augiogon and ebay for used stuff. I know there are stuff for sale at many forums, but I do not want to check one by one.
Now I have narrowed down to infinity P152 (or 150), polk Rti4, bronze B1 and PSB B15. Infinity can be had for around $100 and the other three are $200. can anyone help? Thanks