Hi Jan12
We flew with SAGA at the beginning of May, not through choice but our carrier was changed at the last minutes. They were absolutely fine - the leg room wasn't bad, Turkish staff very pleasant - though take your own packup as what they sell doesn't look appetising! and they were bang on time both ways.
The Mendos is nearer to the centre of Calis - the Letoon is right at the far end of the beach - though lovely I understand.