I enjoyed Pennys performance more, and she put her heart and soul into that dance off (danced her boots off!). So, Penny gets my vote.
Can I just add that there is a lot of unjustified bitterness on here at the moment. Some people need to remember that it is not Pennys fault that Gabby is out. Ultimately it is the fault of the people who didn't vote for her.
ETA - Also these conspiracy theories are stupid. If Penny had gone, we could all say "Ah...they only did that to keep the husband and wife thing going". Or "They only kept her in because she works for the BBC". Or "After all the fuss about her not being allowed to do it last year, they couldn't exactly vote her out this early, could they". So bunkum to all the consiracy theories.