First of all I would like to say that Blogomunity has great support. They will help you quickly and reply to all of your questions - whatever it is presales or aftersales. I had quite an unusual case where I wanted some component to copy data from domain to subdomain and allow me to change it without affecting data on the main site. I asked if MightySites could help me, but there was some misunderstanding and guys said yes, so I've purchased the product. Finally I realized that it's not working the way I need as mainly MightySites provides you with single log in and makes data from one site being displayed on other site. But as soon as you change it the data will be changed everywhere. I explained the support team that I wanted something different and they helped me to develop an additional plugin for a small cost! So at the end I have what I want and Mighty Sites provides me with single login. Perfect, isnt' it?