The R41 is awesome...check the R41 combined thread, or the BrotherHood of the Open Comb thread for more details. It's got a lot of blade exposure, so be prepared for that, it takes some care, just like a straight or a shavette (but not quite that much care..it's still a safety razor). The razor as it comes is fairly light, by my standards. I've not held the Grande version, so not sure on how it feels. I replaced my handle with the iKon Bulldog, which while short, is very heavy and grippy. There is lots of info in those threads I mention on handle options, and the R41 as is.
+1 on Bob's handles....he's got a number of great options. Also the new Tradere handles are quite nice (see the vendor forum).
James - 2011 R41 w/Weber Handle, Feather, Arko (face lather), TGN Super Silvertip brush, Gillette Sun-Up AS
BOTOC - LOSER - ARKO - TOFLAC-U - GNU - B.E.A.S.T - Excalibur