I've honestly only had "dumbphones" with Net10. They've apparently updated their phones now, so I bet they don't even have most of these now.
My first cellphone was a Nokia 1600. My dad got it for my 13th birthday for $20. I liked it, and when they say Nokias are damn strong, they aren't kidding. It slipped out of my pocket while my friend and I were in a spinning cage ride at a fair. It bounced around in there the entire duration of the ride, and at the end it fell right into my hand with not a scratch on it. Unfortunately, I lost it a couple years later.
Of course, the screen and graphics seemed somewhat "primitive" compared to today's standard, but the games were kinda amusing. There was this one game with a rabbit, looked like a bunch of minigames, but I could barely understand what to do. :I It had a little music composer thing where you used keytones to make a tune, which you could add as a ringtone.
The next one I got was an LG300G. Would have normally been $20, but my dad got a few of them very cheap at a store that was going out of business. It lasted quite a long time, actually. Did its job perfectly, survived a slip into the local creek, a 6-hour snow burial, and countless tumbles onto pavement. It finally died last year for no direct reason, but it sure went out with a bang. One day, the icons went all different colors or were distorted, and it took a long time to load each screen. Sometimes it would open something I didn't tell it to or shut off randomly. I sent a message to my mate. He responded, but it wouldn't let me open it. All I could see was the first five characters of the text: "What...". With that, I knew it screwed up my text somehow. When I got home, my mate sent me a screenshot of the paragraph of crazy characters my phone sent him. Finally, the phone froze entirely, and it wouldn't even shut off until I pulled out the battery.
I used one of those spare phones for only a month, and even that one's screen decided to go goofy just while sitting on my desk not being touched that day. Very weird.
Not wanting to mess with the cheap phones again, plus wanting a keyboard for easy texting, I got a Samsung S425G, $60. CUSTOMIZATION FOR THE WIN! I can insert a micro SD card with custom background images and sounds to customize the phone to my pleasure. You gotta make sure the custom ringtone is less than 300K, or it will refuse to use it. But you can still store music files on the phone to play. But it doesn't have a port for earphones, so it's not a very good MP3 player. It has a pretty nice camera, too. I've found it best to use in daylight; the dark seems to make pictures look more pixelated for whatever reason. I suggest not sending the pictures through text. Sending a single picture will drain over 8 service minutes. It's best to just wait and transfer it to the computer. Unlike the other two phones, this one doesn't have any games automatically on it. You need to buy them, which I personally don't see the point in doing. Overall, the extra $40 was worth it. Let's hope it lasts a good while.