Replacement Battery

[Hector]

Although I've had this battery in the bimmer since 2000, the battery seems to be going strong but on the GF's car, we had to replace it a few weeks ago after just less than 3 yrs of ownership. So right now, I got mixed reviews about it. Anyway, I will not buy another Int'l Diehard 'cause it's too expensive...

My car has been sitting for last few days and this cold morning (+5*C) the car wouldn't start. I need some opinions on replacement batteries. I guess my options are: dealer, autozone/kragen, costco, something else?
My friend recomended gel cell type batteries, are those good for our cars?

[Anton CH.]

Cool, thanks for all the tips.
P.S. +5 is considered pretty cold by our standards =)

[Anton CH.]

Callen:
After several trips to the store I finally found an Optima that fits! Our cars (under the seat battery) uses a group 34r optima red top battery. It requires the contacts to be on opposite side.

[Paul in NZ]

FWIW i found a hella battery that seems idential to the BMW battery that came out.....