If you are doing mostly paved with maybe the odd bit of gravel I expect the hybrid will be a better option (assuming it fits of course). Specially if you have a MTB today.I'm right now between two bikes .
Northrock Bike - Mountain Bike - xc29
www.northrockbikes.com
I have a Rocky Mountain right now . But it is set up for off road . It is also a bit small for me ( Medium frame ).
I went out for some trail riding and a few jumps . It just didn't do it for my age . I like the idea of a bigger tires for the road . I might do some tail ridding without jumps and such .
Looking at both bikes they are typical entry level with mostly entry level name brand parts that should do the job for most people. I would rather the hybrid had a rigid fork, the suspension fork it has is IMO a fashion accessory that adds cost and weight.
Remember big box store bikes may end up with assembly problems as compared to a LBS.... but the buying market is tough.