Everyone has good things to say about it.
I had my Makita core drill stolen a few years ago, and have got by with an SDS since.
I might buy one, but I did a 4" core yesterday with the SDS and it only took 10 minutes. The real painful thing about losing the Makita is I'd only used it a few times and had used an SDS prior to losing it. The Macrist is cheap my Makita was £500 and that was years back.