I love them both. But when it comes to working on being a better, more effective rider...I'd rather be in an english saddle. It make it so you can't rely on the saddle as much. Builds strength in the legs and tooshy. Improves balance.
I started in English and switched to Western. I found western far more enjoyable. I like the competition of rodeos more than dressage and jumping though, probably just my preference. I agree that english is more difficult.