I haven't operated a LAS (yet) and I don't have an urgent desire of doing so. It's a 3-class aircraft to/from LGW... I've done a few IBZs and they're very hard work. Then again, any flight can be really hard work, depending on the timing of the flight, time of year etc.
I do like doing JER flights though. Quick flight time, rush rush rush, but the customers are always great, and it's fun to challenge the flight crew to set new speeding records