I have a suggestion if you go this route. Unless your PC has an exceptionally large high-resolution monitor, comparable to the ones on workstations or X terminals, you are going to want to set your default font as small as possible. A font that makes for comfortable viewing on a high-resolution screen is too big to be useful on the typical PC screen. Something like HP's Motif calendar program would fill the entire screen. This is not something you would expect an X server to compensate for.
Resolution independence is resolution independence, after all.
I have found myself setting up separate accounts on the host machine so that I will have distinct environments. Typically I will have a different set of default applications launched also. This alone can be a productivity boost. The other way you can use Reflection X is a much less common feature in X emulation products. You can launch individual X applications from within your MS Windows environment.