LM vs LM-R is a tough choice. I love them both. I agree that the LM-R looks small in a 19". There are days that I wish I had both sets. I am putting a set of LM's on my E30 M3, so I guess I ended up with both anyway.
I personally love the amuse offset LM-R, but if you are not doing the necessary suspension (coilovers and camber plates) then I'd do the LM's.
2011 E90 M3 - Alpine White/Fox Red Extended/Carbon Leather
Premium/Convenience/Cold Weather Package - Competition Package - M-DCT - Sunshades - EPS - BMW Apps - Sat Radio - Ipod/USB