A logo is your trademark and should not be one of many from ready-made templates. Then you will not stand out and it also creates a bit of confusion if visitors have seen your logo before - at another company.
Important thoughts about a logo:
Does your logo represent an understanding of what you do?
Can it be used with different colors?
Will it work as well on letterhead as on a car?
Your logo should create a recognition effect. It will be your identity in your company.