I have been using these speakers for about 3 years now. Use one individually in workshops for groups of 10 - 60 and as a pair for concerts. Mostly I use them in schools, but have also used for solo gigs, small band setup and for bigger band for dancing. I've even used them for an outdoor wedding. They are fantastic quality for the price.
Pros: Although they are small speakers, they fill any room I've used them in really well with a full sound. They are light and so pretty easy to handle, even if the design for handling isn't the best, in my opinion. They are well made and last the test of time - in and out of several schools a week for three years and hardly a mark on them. They've never let me down.
Cons: Obviously they will never have the sound quality of something 4 times the price, but it works for my needs. The only handle on the speaker is on the top, making it difficult to put on the stand if it's particularly high or more awkward to carry round than if it had one on the side too.
I have the covers Thomann makes for these and they are perfect, keep them snug, safe and scratch free.