Isobutanol replacing ethanol, good or bad?

[greenie]

Living here in Maryland, safely (?!?) within the “ ozone transport zone”- we are forced to buy fuel with 10% ethanol. So I drive several miles outside the country to southern PA to but ethanol-free gas. It works well in my antique cars, my lawnmower, chain saw, snow blower, etc. 
Now I see a local gas station has fuel with isobutanol instead of ethanol. The EPA accepts it as an “oxygenation agent”.

Without starting a political discussion, is this a suitable replacement for my fuel buying trips to PA? Thanks.  

[bryankazmer]

Chemistry, no politics.  Think of isobutanol as a less volatile, less solvating version of ethanol.  If your rubber parts are attacked by ethanol, they are likely to still be attacked by isobutanol, but less quickly.  Same alcohol function, but dragging around a bigger hydrocarbon tail.

[rocketraider]

Not familiar with isobutanol but I always wonder about oxygenated fuels. I'm old enough to remember the MTBE fiasco where the cure was exponentially worse than the disease.