esc recommendation

[quads500]

I have sync issues between SS X3108s 900kv and RCTimer opto 30A w SimonK. I tried uploading BLHeli but get worse.
My setup:RCTimer Crius AIO on MultiWii, SS X3108s 900kv, 4S, on S500 frame.

I am tired of uploading something.

Will you recommend an ESC ? (Hobbywing Platinum 30A,  ZTW Beatle Series AL 30A, DYS BL30A, Emax BLHeli 30A ...)

[pete678]

im no pro by any means but i have built a fair few quads now and i've stuck with a couple of brands for there price, reliability and availability. Speedix esc's are great in my eyes as i've never had one fail and they are well priced. I've got lots of experience with hobbywing but not there xrotor series. But if there anything like there car stuff they'll be very good!
hope this helps a bit 
Pete