Personally, I like all of those logo's.
I suggest that you insist on getting your logo sent to you in a vectored format so that it can be professionally duplicated on business cards, web sites (modified, of course), and many other promotional materials.
If you open up your logo & magnify it over and over again and it starts to look grainy, then it's a rastored graphic and you will have to pay someone to convert it into a vectored graphic before it can be professionally replicated.