I just switched from a "full size" ergo bar to a shallow drop "classic" bar (Deda 215 shallow). I switched because I never could get the ergos positioned right for use in the drops - the ergo bend didn't work for me at all, I couldn't reach the levers well in the drops, the end was too short to feel secure, even for my small hand, and I thought the drops were too deep.

Haven't put a lot of miles on the 215 shallows to tweak the position, but on the trainer they felt a lot better. There's several other bars with what looks like identical shape - the Ritchey WCS classic being one. The only bars that appeal to me right now as an alternative are the FSA Omega and the Bontrager VR since they are even a tad shallower. I might try a flat top bar sometime if I can "steal" one from ebay, but haven't had a problem with round tops so far. If/when I really fall in love with a bar, I might go carbon, but I tend to be a carbon skeptic and a cheap SOB.