Yeah, same with me, i have no one favourite model, it all depends on the mood.
One day i might want to have a nice relaxing sight seeing flight in one of Carenado's great aircraft, then the next i might want to take Lotus Sims L-39 for a gas around, low level flying, dodging powerlines(if if you could hit them

) and huging the hills.
The only thing i really never will fly are airliners, im not a fan of getting told what way to turn and when by ATC, i like to getting lost, and finding a way to where i want to go. Usually ill get there in the end.
But if i had to narrow it down, it would be:
Carenado's C182Q for those nice flights
Lotus' L-39, simply amazing
RealAir's Spitfire, for the warbird flights,
and....
im sure A2A's B-17 will very soon take a slot, buy the looks of it, it is amazing, cant wait to get it
But yeah, its all in the mood for me.
Reckon your right Ian and Dion....i love my 748....and my Lama

....but sometimes....a

out , full noise low level in a Tornado....well.....helps me sleep

opps...sorry about the above...didn't mean to repeat everything....can you fix that Robin?