FWIW I have never found a .... ahem .... "session IPA" that was as sessionable as a good IPA....
I really enjoy Lagunitas Daytime which they refer to as a "fractional IPA" @ 4.65% ABV and 54 IBUs. I think it tastes a lot like their normal IPA.
Lemongrass Blonde / RYEteous Super Ale / Habnero Wit / XPA #2 / American Strong Ale / Baltic Porter
Up Next: Pumpkin Alt, XPA #3, Irish Red