I have a 2.5x Powermate and use it a lot with my 24 Pan which mates very very well. The pair give approx the same power as my XW10 and I don't see any great difference between the two in my 10" LX200R.
Contrast is very similar and performance is exceptional as you would expect.
I find the powermate very handy with my PST and also the ETX.
Good luck!