Hi everyone!

I haven't been here for some time but hopefully my pano skills progressed a little. I've done and stitched several multirow panoramas using my Canon G6 and NN5L head. Anyway, as you can imagine, it's quite difficult and time consuming to do it multirow... Several days ago I decided to go with a Nikon D90 and a fisheye to take just a few pictures. I'm thinking of buying Nikkor 10.5mm lens but before I do that, I would appreciate yours input on this. Has anyone any experience with this lens? What are different (maybe better) choices?
I guess 10.5mm will give me full frame cropped picture. Just wondering if isn't it better to go with circular fisheye - maybe some Sigma?

Hope to here from you!