Im starting to think that low 1070's is about as big as I want to go for IPA or even IIPA.
I agree with that for an IPA. For a IIPA I like to get up around 1.085 or so. Most of the extra gravity points on the IIPA come from simple sugar, so it's not that much heavier.
Since being disappointed with so many large commercial IIPA and IPA offerings I don't like to go above 1.060 for my home IPAs and pales.
I see no point, and none of my attempts at giant IPAs have gone so well that I felt it was worth the hop usage.
My 6 Tap Long Draw Tower Build:http://www.homebrewtalk.com/f35/long-draw-salt-water-chilled-beer-tower-271578/
I like shooting for between 1.070 and 1.080. Ferment down to the low teens and you're still pushing 8.5%. I think 8-8.5% is the best range for the style, while still ensuring the necessary attenuation.