I can relate to that
I have a D40, and I think it's great when used with it's specific lenses. But for manual lenses it sucks (unless you have a lot of time to mess around).
So I did likewise, I tried a Pentax dSLR but didn't care for the small viewfinder when using manual lenses - Film SLR have such better viewfinders for manual lenses
I guess we need a dSLR with a big viewfinder but sadly they are evolving to have no viewfinder at all (mirrorless single lens cameras)
dSLR are slowly evolving into cell phones.
But I am waiting for someone to make a dSLR with a viewfinder as nice as the old film cameras, it could happen I suppose