I am a happy DF patient...so extremely biased...but...do as Dr. G suggests, compare their DE stats to evaluate the lab...then it takes out the issue of YOUR egg quality, and is a better assessment of the lab, in general.
FWIW...I was 42 when the lab had to freeze/thaw my 5 day embryos from a stimulated IVF (7 of them) because of OHSS. My 42 year old embryos had a 100% freeze/thaw success rate...Dr. G transferred 6 (the seventh looked 'bad')...and I came away from that cycle with 3 initial implantations, and 2 healthy take home babies (one implantation spontaneously aborted).
Any lab that can successfully do NCIVF...typically working with one egg, doing ICSI and transferring a single embryo...and do it successfully, AND routinely...it has to be pretty good.
A satisfied DF patient...