Nice logo, good play on power button concept, looking for a little more refinement. Font is nice but bold. Upper/lower case options would also be helpful.
Please check entries #36 #38 and #39, including TC forming a circle in entry #36 and #38 actually what i'm trying to make it representing the "core" through the TC or TCC lettering, as you can see i put a circle in the bottom of letter T.