See if mb models still have any of the highest servos left on sale.
I picked up a couple of the mid spec Blue ones for 45 quid each, reduced from 95, been running one in my 410 for a year, it's my longest serving servo. So I've stocked up!
Also, depending what radio you have, it might be with avoiding certain power hungry servos (Spektrum don't play well with savöx in some applications.)
An idea of budget might help with some more suggestions! As I've heard the ko propo rsx are quite nice.