Need nice, risky funds for my 403(b)

Looking for some aggressive funds for a new 403(b) plan. Will be working through MetLife, and there are several choices: Franklin, T.Rowe, Oppenheimer, Janus, Loomis...what to do? It's difficult for me to research each and every fund -- I'm not in the 'business' of investing.

I would use the Kiplinger top 25 as a benchmark.
If you don't have time to do your homework, and you don't want to pay an analyst for advice, use their research.