The closest you're going to get to a candybar style phone right now will be to get the LG Chocolate, or the LG EnV. Otherwise, you'll have to either switch to a flip phone, or switch carriers. But even switching carriers might pose a problem at finding a candybar style phone you want, as people nowadays prefer flip phones.
I am a fan of the candy bar form factor, and have always preferred it to clamshells and swivel/slide phones. I am currently a Verizon subscriber, and have a way outdated Nokia 6015i. This was a low end model, but I chose it because it was one of the only candy bars Verizon was offering. I am now eligible for upgrade, and I am itching for a new phone.
HOWEVER, Verizon doesnt seem to have a single candy bar phone in their lineup. Does anybody know when or if a new candy bar phone will ever make it to Verizon? Maybe something like the Nokia 6375i?