I have this razor (well, I actually have the blue handled one) and I love it. It was the first DE razor I bought and it performs wonderfully well.
I don't have particularly large hands, but I have no issues with the handle or the weightiness - it is indeed much heavier than the Gillette cartridge razors I used before, but that is largely a good thing as I feel I have better control as I let the weight do the work.
Many have stated on here that it is quite aggressive and not a beginners razor, but I found it quite easy to get a grip of as a beginner. I have quite a bad Cream Acquisition Disorder, but I feel the reason I haven't developed a Razor AD is simply because this razor is so good.
I did eventually add a second razor because I wanted a bit of variety (Merkur 39C Slant) and longer term I might add a razor or two as a bit of variety, but if I was told I could only use one DE razor the rest of my life, I'd be more than satisfied if that Razor was this one.