which project type is your favorite?

Do you like huge projects that take a lot of work, time and attention to detail, or quick and easy stuff for that sense of accomplishment in your life? Here's the two I'm working on right now. The bicycle is one I trash picked, and the RV is a 400 buck special, that is mechanically great, but the interior is unusable. I'm looking forward more to the RV to be honest. Lol Seriously though, what is your favorite type and why?