Having flown Thomsonfly to Montego Bay recently, I was pleasantly surprised. Leather seats a tad narrow, good legroom, very edible food.
Having asked at check-in for seats "towards the rear", I was dismayed to find we had the pair of seats right at the back, that didn't recline. Fortunately the loos are in the middle of the aircraft, and even more fortunately the folks in front didn't recline their seats much.
On the return leg we had been assigned the same pair of seats, but to my surprise one of the cabin attendants, without any prompting from me, volunteered to find us a couple of better seats, and did so.
I was most impressed, and I had been dreading the expected cramped charter flight conditions. The experience was rather better than my last couple of scheduled longhaul flights.