Even at box speed I found the CR200 to be pretty grainy. It's a kind of attractive film in its color rendition, but very different from Provia 400X.
I've seen good results from pushing Provia 100F to 400, but I haven't done it myself. The samples I found in a quick search were all in medium format, so I don't know how bad the grain gets in 35mm.
OP, since you mentioned the cost of developing slides as part of the problem, are you considering looking at color negative films too?