Battery suggestions

[shifty]

Ok looks like my batt has had it I went away for a week and she is dead so ive got it on charge but I think its time to payout, so I was wondering what popular I havent relocated so its gona have to fit in the oem position.
Ive done a bit of searching but most suggestions are only brands not models .
Im also considering spending a bit more and getting an optima as this is what I have in my 8 and I want something that can sit in the cold for a couple weeks whilst I alternate between 7 and 8.

So any suggestions