Tuxmachines have had a look at the latest RC for SimplyMEPIS and posted a bunch of screenshots and comments.
You can see it at their website here.
As stated I haven't tested Mepis in several years. I was impressed with Mepis back then, but they have certainly grown and expanded to accommodate the needs of a wider user base. For the home desktop system, I'd almost dare say SimplyMepis might be all one needs. For the small business user, I imagine SimplyMepis can make for a wonderful foundation. I found its performance and included applications well above average, while it's hardware detection and stability in the respectable average range.