Can't go wrong with a Uniden or Cobra. I had a Uniden PC66XL and it was a great radio that I purchased new 12 years ago, medium sized chassis. Now I run a Cobra 29LTD, I bought it used from Ebay and for half the price of a new one (50 bucks) and it was like new. As long as you don't need to many whistles and bells. Best to read up on the radios and features then decide what you need and find a radio that fits the bill.
CB Radio Information, Help & "How-To" Tune Guides
CB Radios for Road Trips
What Is the Average CB Radio Range?
CB Radios "Q & A" FAQ & Information
Here are a few websites to help you get a better understanding of the CB radio. Everyone will give you advise and their personal preference on what radio, antenna etc. The more you learn about radios and features, hopefully will help you determine what you want. Some are for the more advanced user and are not necessarily needed to get started, but in time, you may like to have. We will be able to help with install and tuning. It is nice if you have friends with radios already. Good luck with your selection and if you have any specific questions. Just ask. I would stick with the brands I mentioned, they both have entry level units:
Galaxy also makes a great unit. I have been doing business with Copper Electronics for over 15 years and they are great.
Copper Electronics, Inc.
Again. Good luck.