No real advice, other than I think I'd go with the one with the better components as long as you're comfortable on it.
We've never really looked at bikes at Performance, but do make a trip to Raleigh (2 hour dr) to the Performance store there because they have a great selection of clothing and accessories that we just can't find locally. (I hate buying clothing without trying it on first). There's also a store in Cary, but the one in north Raleigh is bigger and we prefer it.