Just got a 400mhz Pismo with good RAM, etc. on eBay. I'm excited to finally get a Pismo after all of these years! Working online with my Powerbook 1400s made me long for more speed yet something with the classic Mac OS and form factor. The battery is described as holding a charge but I imagine that it will be fairly tired...what is the best price/quality mix for aftermarket batteries for the Pismo?