I'll put a vote in for the Stinger SP1000 battery. They're made for rough abuse such as high current car audio and such. I've got a couple of them and they are truely awesome. They're smaller than an Optima but they are rated the same and certainly last longer from my experience. I've tried a lot of batteries on my Galaxie and I'm happiest with the Stingers. If you're not wanting to spend a lot of money see if you can find someplace that sells Interstate batteries. Most of them also carry Optimas and you can occasionally get awesome deals on reconditioned ones straight off the truck. A good friend of mine uses them a lot out at his starter/alternator shop and if I remember right I think he pays around 70 bucks a piece for the red tops.
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