I might have gone overboard when getting a pair of 8030C's for my home studio, since I don't have any room treatment whatsoever. I had my doubts. However, I can easily say my mixes sound better than before, although it took me some time to get used to these speakers at first.
First and foremost, the 8030's don't lie; I can actually hear stuff I haven't even heard before. They are well-balanced and versatile, not to mention the low-end, which is well enough. I make bass-heavy music and it goes without saying, that a sub is not necessarily needed with the 8030's.
Lastly, I really like the tone control settings on the back of the 8030's. The placement of the speakers may vary, so its very useful in terms of finding the right match for your acoustic environment!