JM Lab Mini Utopia with Utopia sub?

Does anybody have listening experience with the JMLab Mini Utopia? How is the speaker??

Now I hear that the low freq. are not that good, thru?

Can you solve this with the JMLab Utopia Sub II?
Still talking about a two channel system.

Maybe later on four JMLab Mini's, a JMLab center and JMLab Sub for Dolby surround. Does anybody have experience with this setup?

Please help me out

Alex