It really depends on some things you didn't mention.
Is portability an issue?
Do you ever need to cut things thicker than a few inches?
In general, for most home woodworkers, a simple non-sliding miter saw is more than adequate. If you need to cut larger wider materials frequently, then perhaps a sliding miter saw would be beneficial.
I do a lot of woodworking and only have a non-sliding miter saw and get by just fine. But I also have a band saw so on the rare occasion where I have something too thick or too wide to run through the miter saw, I can do it on that. I've also gotten quite adept at cutting half of a wide board, flipping it over and cutting the remaining half so even though my saw is rated for 10 inches, I can cut boards up to around 16 inches wide with good results.