qtigner,
Welcome to LGM and welcome to the Bass Forum.
Your question is too wide open. Here are some things you can do to narrow your choices down to something useful:
1) Set your budget. How much do you want to spend?
2) Define what you need. Take a shot at first identifying where you expect to play. If this is just for home, get something small. A lot of really nice 50W and 100W combo amps available. If it's for playing in a mega-church, you want something in the 500W range and you're probably looking for a separate head and cabs. In between? A whole lot of choices.
3) Go to a Guitar Center or some other suitably large music store. Take YOUR bass, and play through everything you can plug into. You need to hear what is available in your price range.
That's it for now.
Peace,
James