I recently had a cast with the new Xi2 8# on a Sage open day.
Very nice, I must say and as Juro stated the rod must suit the caster and his/her style... It certainly suited mine! Also on test was the TCR in 6 and 9#. Boy do those rods toss a line! A little to stiff for my liking but designed for a job.(see the ad)
I currently use an XP in a 8#. I like it's light weight feel and responsive tip. It lets me feel the fish fighting better... Even if they are small!