So after a few weeks of testing out these new DYS goodies i've drawn my opinion on both the SE2205 2550Kv motors and the XS20A Blheli_S ESCs. The results have been a mixed bag but the overall performance has been good. Set up for these tests were the following:
DYS XS20A ESC BLheli_S - oneshot42 enabled
DYS SE2205 2550kv
Kiss FC on RC28
QAV-R Lumenier
4S 1400mah Multistar 65C gold spec
HS1177 FPV camera 2.1mm lens
TBS Triumph antenna
GoPro 3 Silver
DAL Prop 5x4x3 v2 (non-bullnose)
X4RSB
Taranis X9D plus
Fatshark attitudes + faceplate