Logotacular Fontasticness

Today we will mostly be trying to decide between almost identical fonts. Help?

( Five logos enter. One logo leaves. (images) )

ETA: We seem to have acquired an option #4b - see image in the comments, and I guess vote for 4 if you think 4b is the winnar. :)

Poll #670 Fontastic

Open to: Registered Users, detailed results viewable to: All, participants: 15

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The version I like bestest is...

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#1
5 (33.3%)

#2
2 (13.3%)

#3
2 (13.3%)

#4
4 (26.7%)

#5
2 (13.3%)

Helen says to tell everyone that she is still working on the atom thingy and hence it is not yet to be criticised :) Personally I think it looks cool.