What price range? What style remote-regular style, touchscreen? You will almost certainly need a fully programmable remote.
The Sony VL700/900/1000 all have sufficient learning capacity to learn all your other remotes.
The Sony RM-AV2500 and RM-AV3100 (my preference) are larger touch screen remotes, for more money, of course.
Most of the Radio Shack/OneForAll remotes do not have sufficient learning capacity for your purposes, but with jp1 you might be able to use them.
There are also some Harmony or Pronto remotes but I am not familiar with them.
Here are my usual references where you can go to compare features and prices.
http://www.surfremotecontrol.com/[Link: ecost.com][Link: remotecentral.com]http://www.aaxes.net/http://www.bluedo.com/