I used the SK7 last night in a league match and was very impressed with it.
It was at a warm venue that I have not played at before so can't compare it.
However even with a Nittaku Hurricane I played very well, although the Nittaku Hurricane felt too slow to me on it.
The spectol red felt excellent maybe it was the extra weight of the blade, seriously they felt very very good.
I think I need to try Tenergy 05fx on forehand. It was much better for looping than I expected, much better than a force pro black or clipper.
It is possible my Nittaku Hurricane is a bit worn out now though.