I just grabbed a 4.0 SL EQ. There wasn't much of a decision, in that this was the only one I could find in a M unless I wanted the non-SL. However, if I had a choice, I probably would have opted for the EQ. I was coming off of a 30 year old Cannondale Delta V 500, so this was completely new territory for me, and I felt I wanted all the bells and whistles for longer riding. I think the rack is going to be very useful for doing some extended distances without a backpack on, and just having the lights available out of the gate is great. I've never used lights before, and it provides some nice peace of mind on the safety end as I have to ride on a lot of short shoulders in my area. Early on the fenders are actually more of an annoyance for loading it into my car with the front wheel off, but once I get riding through some moistness I'll probably appreciate them more.