Apart from some fee differences, obvious differences in site engine and trading execution, which I've found to be advanced enough yet simple enough for beginners, on both options.
Using both solutions, I've found to like more the UI and user/trading features implemented in BTC-T than cryptostocks.
But the key differences that would swing me to the BTC-T right now I believe are well summed in burnsides post here:
https://bitcointalksearch.org/topic/m.1335397It has definitely been discussed and is somewhat covered in the FAQ.
3 major differences that make this unlike any other sites available right now.
A) We are incorporated. For real.
B) Legal wording is such that this is an entertainment/educational site only. Assets are not real. There is no recourse if an asset fails. Etc. This makes it more risky for "investors", but less risky for the asset issuers and most importantly, less risky to BTC Trading Corp. This would seem like a huge issue at first, but realistically there is little recourse in an asset failure situation anyway.
C) Asset issuers are free to leave at any time. I have made it simple (via website, json api, or email) to get a list of people holding your asset such that you can move to another exchange or to private management pretty much at will. We even force it upon the asset issuers in the form of an email every 12 hours.
There's lots of other differences, but those I think are the key ones.
I believe overhead for issuer/manager would be a bit less using some of features presented on BTC-T page such as:
Ability to schedule dividends. Pay dividends based on date/time in the future.
Ability to email all shareholders important notifications.
Ability to temporarily stop trading on your asset when you have big announcements.
Please, do add more of what you think is relevant to pick the right tool from the choices you've presented.
