Rob, Brent and Becky's lists varieties for the south, which means they perform well with minimal cold period and should also perform well in your zone. They've revamped their website, and although it is taking me some time to get used to it, you can use various filters to do a search which is pretty handy. The day after Thanksgiving they usually mark all remaining bulbs half off.
Any of the tazetta group are great in warmer zones.
