When my OEM batteries needed to be replaced, I switched to Interstate. They seemed to do just fine. My gate opener uses an Interstate battery as well.
I have an Optima battery in my Beetle. It sits for long periods and has a high-powered stereo, so it was the choice for that vehicle. It's a sealed gel system instead of liquid, so you can even turn the battery upside down! The car is modified, so the battery compartment and cables are custom designed to accept the larger Optima battery.
Over the years, I've tried several brands, and had equal success with all of them. The important thing is to make sure that the battery you select meets or exceed the cold cranking amps specified for your vehicle. The group or type of battery you select is important with respect to fit and terminal orientation (remember, your battery cables are only so long). If you keep that it mind, you shouldn't have any problems.
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car