Thanks for the replies everyone; overall I think it’s a pity there’s not more of these around, they do look very nice with the 4 seats/aeros capability (would certainly prefer flying one of those to a PA-28/C-172 personally!). Although it probably wouldn’t be a good idea to do aeros in it with all 4 seats occupied, I guess.
Guess I shall just have to wait until I win the lottery & the G140 comes out!