check the same site again. 730 is tested as well. it is basicly the same hardware apart from SACD, but 930 shows a bit better figures for picture and sound. 930 is also a QS whatever it really means. in some other test, in a paper mag, they rated 730 and 930 equally for pq while 730 stayed behind with sound. the decision is yours i'm afraid. i have the same dilemma, but i'll probably go for the bigger brother.
i cannot comment on your plasma, but i'm not sure you really have to match it with a player. when it's good, it should give good results on any display, unless of course it doesn't

for some strange reason. the only way to be 99% sure would be to put them both together.