I have an R4 and find it very reliable and a pleasure to use. I prefer the R7, though, for its TTL flash system, and half stop shutter speeds in manual. The R 3 & 4 viewfinder also has a slight weakness in that it can be hard to see the shutter speed scale in dim light, or against a very dark background. This was solved in later models. I find the R8 & 9 too big. I would agree that there is nothing particularly special about the R cameras, but the glass is second to none and visibly better than my already very good Olympus OM lenses.

David.