See what fits your face, but the I/Os are the best goggles i have ever rocked, eg2s are pretty slick as well
I currently wear Smith Phenom's with the Igniter Mirror lens (35% VLT for bright/day riding). They have excellent peripheral vision and I like the tack strip inside the band so they stay put on my helmet. They fit great (they should - it's a Smith helmet) so no gap
I like them so much, I snagged a second pair of last year's at TJ Maxx for $39.00.
They have the blue-ish Sensor Mirror (70% VLT - perfect for overcast days and night riding here in the East).
I tried the I/Os on and they fit great, too... but I couldn't see much difference in the field of view over the Phenoms.