I presently have a Motorola 75, Star Tac 7790, an old Mitsubishi, 18X, IIRC, and a new one, a Nokia 5165.
I paid about $250 for the Motorola, $300 for the Star Tac. I was taken. The Nokia 5165 was just over $100, including extras: a higher capacity Li ion battery and cigarette lighter charger cord . Standby is about a week with the standard NiMH battery, and two weeks with the Li ion battery. Talk time about 3 hours and 5 hours, respectively. I thought the other phones were doing great when I got 3 days of standby.
The cell phone companies make their money on roaming charges and monthly fees. They virtually give their phones away. Don't be afraid to haggle, and work with the people on the internet; don't go into a brick and mortar store; that was my mistake.
Here is what to look for in a phone:
Make sure it is dual band (digital plus analog) phone. Digital only phones (the Nokia 3390 being a good example) are often featured in ads, and these work at the PCS (Personal Communication Services) wavelength: 1.9 GHz (1900 MHz). The problem is, digital phones depend on digital cells, and these are mostly in metropolitan areas. If you get out in the country, you will probably run into analog signals, which operate on 800 MHz, and your digital phone will not work at all. Usually. There are digital cells which use the 800 MHz wavelength (most digital phones actually use both 1.9GHz and 800 MHz as well), but a completely digital phone will not pick up the analog signal.
Find out which type of multiplexing (signal sharing technology) is most common in your area, so you can get the appropriate digital dual band phone. There are three types, TDMA (Time Division Multiple Access), CDMA (Code Division Multiple Access), and the less frequently encountered GSM (Global System Mobile communication). CDMA is generally preferred, as it is encrypted, and thus nearly immune to 'cloning' (someone stealing your cell phone number and using it to make calls that will show up on your bill). Further, TDMA cells generally have a larger area per cell. This can be a mixed blessing, however, as there is a Sprint cell in San Francisco that handles 240 calls simultaneously, and it is full 24 hours a day, 7 days a week; Sprint is trying to put up satellite cells, but is having problems with interference between the two coded signals from the two different cells.
Ask your friends how much coverage they get, then find out what type of multiplexing the friends with the best coverage are utilizing. Just look it up on their cell phone companies' website. Then get that type of phone.
NiCd batteries are no longer worth the money. NiMH are what you will often get with a phone, but you should get an extra Li ion battery. This will give you a lot more standby/talk time, even more than if you calculate what you should get by comparing mAh ratings of the batteries. Li ion batteries have a problem, and that is that they are only good for about 2 or 3 years of normal use, but by that time, you will probably benefit from a new phone anyway. The sensitivity of phones is ever improving. In the Santa Cruz mountains, the Nokia was the only one of several cell phones present which would work.
Give a lot of thought to how much you really need the extras, such as e-mail, voice mail, and internet access. I had most of these on my phones, but found I never used them. If you do use them, expect to pay for them.
Expect some hassles with your provider. The overall consumer rating for this industry is a 'D', with only one company, AT&T, getting a 'C'. See the comparison here:
http://www.planetfeedback.com/ratings/Industry/0,2503,100,00.html
I found this company excellent to buy accessories from at heavily discounted prices:
http://www.wirelessbargainstore.com/index.html
Hope this helps, Walt