Sorry for lateness, but the results for the polls are in:
Series 5 Episode 6: 90.62%
Series 3 Episode 10: 91.17%
Series 2 Episode 6: 76.47% (in my opinion seriously underscored)
Series 2 Episode 7: 79.17% (also underscored imo)
Well I would have thought Episodes 6 and 7 of series 2, which in most people's opinions is the best series so far, so I'm surprised that it hasn't done as well. I enjoyed Series 3 episode 10 but I thought it was the worst out of the 4, but that's my opinion, yours is obviously different...