Not only is 2J Tabs a much more robust and flexible product than the free ones out there but the developer(s)/support team really do their best to help with issues. Even when they are your own (ignorant) doing.
I am sooo happy that I came acros this!
We found Multi Sites, emailed the developer a couple of questions and received an answer very very fast.
Then we bought Multi Sites and installed both our sites without hesitation.
The process is almost identical to installing two completely separate installations.
Multi Sites works without a problem. Even when I blamed Multi Sites for an issue the developer helped me to solve the issue within hours although he was not to blame.
Excellent component, excellent service!!!