Jamis is a good company. They have a full line of bikes, from entry level to high high end. This year, their new high end bikes are really really nice. I have a co-worker who has an entry level one that he uses for fun, and he really likes it. I also have a teammate who has a Jamis TT bike which is pretty nice.
All around, I feel that Jamis is pretty similiar to Felt- the entry level bikes are good for the money but nothing special, but the high end bikes are pretty sweet.