I've got to believe shooting a HSM motor lens would be a lot less hassle and a whole lot better tracking than all these manual focus lenses.
On the other hand, I have NEVER sent a manual focus lens anywhere 5 or 6 times for calibration, as has been stated in this thread concerning the Sigma 50mm F 1.4. Is ANY lens really worth that much blood, toil, sweat, and tears, especially for a hobbyist? I think if one really wanted to use the Sigma 50mm F 1.4 for the "look" of the lens, they would be better off investing in focusing screen with a microprism or split prism aid, and forget about sending it in numerous times to get AF calibrated. 50mm is not a typical "action" FL in the first place.