Opinions / suggestions on logo please!

I would go for two or three because their more professional looking.

2 or 4

2

Go with 2 or 4.

definatly 2 or 4.... NOT 3

#2 for sure. It's clean and professional looking. It's also easy to read and understand. I would say definitely not #1 because it's a little confusing, and #3 is a bit too simple. #4 is okay, but I would prefer #2 because it's more flexible in that you can change the size and background if you want to without interferring too much with the design.

#2 and #3 but if you are looking for more of a professional view I would animate the graphic and maybe it would look more expensive and time consuming. but if you are looking for just a mid-professional view of the graphic, I would say what you have is very professional looking. NICE JOB!!!