I have a soft corner for cursive fonts. But of the non-cursive types, I am not too sure what I like more, serifs or sans-serifs. :-(
In short, I like most types of types. :-)
But, type rendering on Linux still pisses me off. When will it become at least tolerably good? Being an armchair critic is much easier than trying to implement a good font interpreter all by myself, anyway. :-)