Trey at The OpenHelix blog has been poking around with the recently launched, newest version of Ensembl, which is now at version 51. He's a bit iffy on the interface, which might just be due to the fact that anything new is usually hard to use at first glance. He thinks that performance is better overall, as pages seem to load faster than before. There's also a "simpler way to add your own data, though as yet I haven't found an easily accessible explanation of formatting the data," he says.