I can say something about coresense, their platform does look great, and yes you can scour the internet about them and all youll find are PR articles they wrote about themselves or published and thats it. As far as a good company to do business with ? i wouldnt deal with them if they paid me. After going thru a demo with them i get told that my company doesnt fit with them. hmmm lets see my first year in business i grossed 1.4mm second yr 2.3mm (when i first spoke to them), 3rd year (after corsense experience) 3.8mm (too bad for them) so far this year to date gross 4.1mm.

This forum automatically stars*** out the 4th company on your list above Stone, e d g e. the reason why they do that i have no clue this is a good company and their software is open source so you can pretty much do whatever you want as long as you have the know how. They also have an extremely active forum with many users out to help each other on top of their excellent support for their platform.

It will handle multiple selling channels an websites fro a variety of shopping carts granted each cart costs a one time fee. For a company of your size i would definitely recommend going with their SQL version. Though i do not know the details of your business its very hard to say if this would be good for you or not, but they are an honest company to do business with and thats what matters to me more than the coresense hoopla.

Devix is another very big player and expensive too. never went through a demo with them as fro what i hear their prices are into the thousands as well.

Mainstreet - did not want to provide a me with a demo to log in and view, all he, and i say he because i think its a one man show, only offered to do a remote desktop session for 30 minutes and if im testing out a platform that im going to spend 1k a month for you better spend more time on the phone detailing your hopped up platform and show me what you can do or give me a demo to log into and see for myself thats why i hate these big companies. They are not willing to do that. They want you to sing your life away without showing you what they can really do and then when you run into problems they say oh opps ok we'll work on it and you have to pay us $200 an hour to fix the problem with their own platform.

So to sum up whomever you go with make sure you get it in WRITING that if "anything" goes wrong with their system they will fix it without charge.