I may be able to help, if you can tell me what surface are you going to mount the antenna to?
If you are mounting on metal, then many will work well. If you are mounting on fiberglass, I think you will only find one antenna that will work.
Here's a good link that describes mounting without a ground plane.
CB Antenna Options
Just my opinion, but the only
good antenna for no ground plane mounting is the Firestik II, with a link below.
Use Google search, and you can find them less than from the manufacturer. Be careful in the model number, as only ONE is suitable for no ground plane - not mounting to metal.