Actually ended up going to Ozen. Very good. 3 pides, one pizza, 4 cans of soda and a bit of salad 55 lira/12 quid. We spent another 50 Lira on taxis from Koca Calis, though. It's opposite a barber rather than a mosque (the mosque looked to be a quarter mile away) and beer was on the menu, although we had resolved to give our poor livers a rest anyway.
I've been to Ametist 4 or 5 times over the past few years and think they are good, although I do think Ozen trumps them. It's not for those who enjoy let's say sophisticated decor/surroundings, however. Good job Mrs Villain didn't spot about 200 ants having a party in the see-through sugarcube bowl on the next table, too. There would have been a riot.