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.
Kolsch / Black Lager / Asian Lager / XPA #4 / Baltic Porter
Fermenting: XPA #5, LeRye Golsch
Up Next: Mexican Vienna, American Wheat, Pale Lager