Actually, a Peterson guide to North American birds would be nice, too. My birthday's coming up at the end of the month, so maybe I'll spring for one.
Thought about the Sibley guide, but, figured that, since my (snort) extensive library of field guides tends towards Peterson, might as well not break up the set.
Anyone out there prefer the Sibley one? If so, why? I know that, years ago, when the new illustrated one came out, it made a huge splash. I'm not enough of a bird enthusiast to understand the finer points of these things.