My general feeling on this is that the hardest character to play is the one that least suits your play style. I find when I play games like this, I'm a bit straightforward, and don't do as well thinking outside the box, so I'm finding Lem a bit of a challenge at the moment, whereas I took to Valeros like a fish to water. If your every instinct is to be good at fighting monsters, and compensating for everything else, you'll be in a fair bit of trouble with a character that's good at everything else, but needs a ton of help fighting.
