Netgear 37AV
Just got my duel band router setup today and tried both the 2.4 and 5 GHz on my iPad2.
Have no problem connecting on either, but I notice the 5GHz has weaker signal strength. That's with the iPad setting about 2 feet away from the router.
Speed wise I see no difference so am leaving it set at 2.4 for the better signal.