Between #5 and # 7 I prefer #7. Why? Because I prefer the alignment; it's more balanced. I don't mind the dark background, but am not a big fan of the purple and yellow colours, sorry!
I don't mind the lettering/font that has been used in #5, #7, #15 and #14 though. I think I'd prefer either all "CAPITALS" or all "little letters" for my logo. E.g. BOLD LIFE ENTERPRISES or bold life enterprises. As opposed to Bold Life enterprises or BOLD Life Enterprises.
#15 is a little too delicate and feminine. #14 is also a little too feminine and perhaps not as "balanced"/ "centred" as I'd prefer.
Having said that I don't mind the dark background colour of #5 and #7, I also think I'd probably be better off with a white background so that the logo can be easily applied to white letterhead/invoices/advertising/blog posts etc....