I had to make the same choice. I went with the RG and I don't regret it one bit.
Ride them both and then make up your own mind. They are both great rides. For me the RG had the edge on the SG.
What's your riding style? I rode both and ultimately went with the SG mainly because I felt like I could maneuver it better in tight quarters or slow speeds. The RG felt sluggish to me.
Besides, I really like the look of passing lamps and not the dual headlight look... [8D]
??????? Road Glide handles just fine at slow speeds I have an 05 and I think its a dandy! I rented a Street Glide in Tx last month and I thought it was nice, but they aretwin brothers from different mothers I will stick with the FLTRI thanks.........................