If you like the Paradigm Monitors, I'd hold out & keep trying/saving for the Monitor 9's or 11's. Nothing wrong with the Monitor 7's; I'd just end up wishing I'd gotten the 9's or 11's in the long run and would always still want them if I went with the 7's, but that is just me with yet another case of upgraditis. I think the best way to fine which speaker to get is to audition both, see which one you like the best, and just hold out for it. Loudspeakers can last a long long long time, so unless you just want to upgrade in the future, you may be using these speakers for quite some time, so just get the ones you want. Paradigm makes quality speakers that are consistently accurate and at a great performance/price ratio, and they are also efficient enough to run off of your Denon 3806 receiver without any problems.
Also, are you going to go with a subwoofer? If so, then the 7's may not be a bad choice, but if you won't have a sub, I'd go with 9's or 11's for the little extra punch.