I like
#72 the most out of the ones in that style, as it would stand out the best and be able to be used on more things with out a total change. If it was going on something red in would be easy to invert the colours. Is there a way you could work the arrows into the logo more and tie it all in togather better?
I still like the original #47 the most out of that style. Your new version makes enhancement look seperate from fitness. With my slogan under it, it would look like
Fitness
Enhancement
Personal Training Studios
So it needs to read Fitness Enhancement.
On my last comment I said maybe include the ment bit of enhancement in the arrows (so arrows would be bigger). This would also give me the option of having the .com of fitness enhancement.com in the arrows. Not essential, but would be very handy.
Please try some different types including some with italics