Db Drive, Rockford Fosgate, JL Audio, just to name a few. just make sure to match the amp to the watts(or whatever) of the speaker.
price wise... stay away from these brands.... Plus depending on the sub you don't want to match the amp to the power ratings on the sub. Most subs should be pushed a bit over rms to get the best quality. Each brand worth a hoot will have all the info you need when you decide on a sub to help pick out a amp to work with it. Currently I am running two pioneer spl series in my new minivan. I'm waiting for my budget to allow me to replace all my breakables with flex glass so I can turn up my subs a little. My last sub was I premier 12 that is rated 100watts rms/ 3000 watt peak. I was throwing a full 1668 watts to it and even with some burping and peak spikes the sub laughed at me.
Audiobon and Memphis. Memphis speakers is some of the best that i have ever heard seriously
Memphis is alright but audiobahn is garbage. It all depends on what you are looking to get out of your audio. Do you want to rattle crap? Do you love sound quality? There are quite a few brands that can hang with mainstream brands that won't damage your wallet. Give me a realistic budget, type of head unit you have, music you listen to, and I will be more than willing to do the research and find you some equipment that will preform great.
I would suggest 1 pioneer premier 10 shallow mounted subwoofer with a small true watt amp pushing about 350-400 watts. Stay small and sound good. If you have a yellow top in the jeep you won't have any dim issues even if you are running some extra off-road lighting. I don't know a lot about mapping or pc's but I do know my car audio. I have been doing that for about 16 years.
Where do you live? If it was close I have some jbl 10's just sitting in my garage that are awesome for a jeep. Sound descent, cheap so if you leave the top off and someone snatches them you can laugh about it. Best of all I would give them to a fellow gamer for free.