Speaking of dead batteries, the stock battery on my 2009 DR is about wore out, I think. What's the collective's judgment on the best replacement battery for these bikes? Somewhere along the line I seem to recall reading that the best replacement battery was – oddly enough – the OEM battery. Is it worth getting an AGM or whatever battery? One of my main concerns is that I don't want a battery that's going to leak acid all over and turn my motorcycle frame into Iron Soup... TIA for any advice guys!