I've never found Denon's remotes to be every good. It is seriously one of the only major downfalls of their line of receivers. I love the MX500 and it is very hard to beat for the price.
As for the component bandwidth I would say that probably most people buy receivers to deliver good sound. Don't worry about the bandwidth too much. It would be nice to have both but unfortunately at this price point that is really hard to come by. I say go for the one that has the best sound to your ears.