Looking to upgrade

I currently have a Denon 1910 avr amp, with fronts - Wharfedale 10.2 and 10.cc center. I want to upgrade my amp and center definetly, not sure about upgrading 10.2's. I was thinking Denon 2113 0r 2313 and Wharfedale 10.cs, Cm is too big for my shelf.

Budget £1000.

Or go with all new fronts aswell, any suggestions?