Does anyone have experience with Optima batteries? I'm thinking of maybe going with yellow tops for the Land Cruiser. My current Napa batteries are leaking acid all over the place causing a bunch of corrosion. I'm going to have to buy new tie downs before I can remove them because I'm going to break the current tie downs. My Napa batteries cost about $450 and it looks like I'd be a little over $600 for Optima yellow tops. Do the yellow tops actually last longer than lead-acid batteries? Are they worth the extra cost?