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i like the option b - and to improve you can do the following (IMHO):
add a few pixel space between letter 'a' and the big green circle.
i like the dot on 'i' in the sample a. you could use the same on b.
- the one thing you should change is the font used for 'webdesign' - may be bit smaller and something which should go with vita on top.

Thank you for your feedback.