I have a Midland 75-822 CB as well. If you decide to go with the Midland, make sure you buy or rig some sort of protection from the weather. Using battery power will make the setup simple and reduce potential line noise. I believe this model is still a very good choice with the flexible power options. I have heard that you can improve performance by using a Firestik antenna (
http://www.firestik.com/CatalogFrame.htm).
I switched to using a FRS/GMRS radio (Motorola T7200) for less noise, longer range and improved weather resistance. The rechargeable batteries will last for a full day of riding. Just recharge them at night and keep a spare for insurance. With RAM mounts, I can easily place the radio/antenna in a good location.
So now I have both and use what everyone else uses on a particular ride. I much prefer the FRS/GMRS-type radios though. The newer models claim some outstanding ranges and use less power.