Would suggest upgrading and maybe getting a smartphone, if that's your thing! Might be worth it to find a phone with the capacity you're looking for, AND a new phone altogether, for the price you might end up spending on another MP3 player. If not, check out battery replacement for the classic. I did that with my 30gb iPod video a while back and it lasted years after!
Also, read an article the other day that the iPod Classic is not dead for good. Their supplier of parts for it isn't around anymore or something of that sort, so it's gone until if/when they decide to find somewhere else to supply parts. I feel like with as much backlash the community has had over the iPod Classic's death, it'll either come back, or there will be a new one!