I've done long, I'm currently doing short. Tbh no one seems impressed either way. Keeps me busy though.
when I did IM I did it cos everyone else was and I needed got know I could too it's not the money that stops me doing it now, it's the fact I can't be arsed with all those hours of training. Doing short (running) means I can do gym, swim, bootcamps and still fit my running training in. Perfect!