As I'm australian, I've only seen up to E4, *BUT* I already can see some clear winenrs in terms of who I'd want to see make the final four based on their performances so far.
I'd go with:
Rupert [I so love that man's style]
Sandra [she plays hard]
Andrew [though from the 'losing' side, he's been diong it hard and I think deserves a break]
& Trish [the quiet achiever]
Who would you choose?
[also as a newbie, if I've broken any rules, Sowwy....]