Light aircraft, GA and warbirds are more fun (partly because anything can happen), BUT heavy commercial is where the money is so that's where Mrs Dare sends me to work.
gliding777, at FL70 over CPT you were significantly more than a novelty. Everything has to climb and descend through your level when you seem to be hovering there for ever (140 kt doesn't seem very fast on radar) and when you are doing nothing more productive than going to NCL because its there it could seem a bit tedious for many controllers. They'll handle you without complaint all the same though and give you the same level of service as those 747s paying the wages, so you'll never know that you are a pain in the proverbial.