We moved from a built in vacuum system to having a Shark and we didn't really know what to expect.  It took a bit to get used to a much smaller sweep path than our old system but it has been nice for both the tile and the carpets.  We are very glad we got a cordless model but it did pose some challenges on where to store it so it can charge.  (Closets generally don't have outlets and we hadn't thought of that prior to purchasing it.)  It's a toss up whether or not we should have gotten a corded vacuum versus a cordless one.  We have run out of power before we finished, which is annoying and we have had to get creative in finding an out of the way spot to store it.