I'd concur with JT2's comments (19th Apr #514) re starting - after over 5 years and around 2000 starts, putting both TM engines to Idle at the same time, the ONLY time they haven't started straight away was when I'd rushed & forgotten the Prime Pumps - my error, not TM!
Brill Stuff (#519) also comments re water rinses. TM used to insist on daily, now happy with weekly unless in salt laden environment, which could be done "hot" (at idle) or "cold" (using vent switch). Hot makes very little difference to operational availability, cold keeps the aircraft off-line for about 10 mins longer. PW still insist on daily and
only have a cold procedure, I understand, despite being happy with tap water. Rather depends on what role you're using the aircraft for.
As far as tail boom colour goes, would concur that a dark tail is a must for Police or lots of hovering operations, whether TM or PW. It's the long hovering that cooks the tail - a nearby Air Ambulance (all Yellow) keeps a nice shiny tail as they just go from A-B & the tailboom stays out of the dirty airflow!
Good luck with whatever you end up with - it's a fabulous machine.