Plus, what clubman forgot to mention was that the 9W birds that TK uses on the BOM (as well as BKK I belive) have a first class cabin which is sold as J, one cab pay for a J ticket and sit in a F suite for no extra charge..
something to consider forsure.

However, I'd still go with LX, the KSML out of ZRH is great, not so from IST.