I suppose it all comes down whether the extra cost of the D7000 is worth it for a beginner, or should I put that extra money into better lenses & sturdy tripod.

I was able to hold both of them today. The D5100 felt pretty light in comparison to the D7000, though the D7000 was comfortable to hold. I must say, I like the fold out screen on the D5100. Decisions, decisions !!!