OK, here are the ones that appeal to me from the suggestions so far, and THANK YOU to all the ladies who have replied! It's so nice to have suggestions and feedback!

Reuben
CALEB
NOAH
Levi
Isaiah
Isaac
Benjamin

I wonder if I should push a little harder for DH to consider Owen. He might come around to it..... And maybe I'll have to think a little harder about Seth. I know he's loved that name for a LONG time.

Please keep the suggestions coming!
Maybe you could use Seth as a middle name. I think Reuben Seth flows really well. (I am a little biased though as Reuben is number 1 on my boys name list now)