Hi anton5052,
The first place to start is post #1 here which has all the information, steps, and guidelines you will need to make good choices. This will keep you on track step by step and help you avoid the “information overload” that 6488 was mentioning. Finding the experts is always a better approach than trying to become one yourself because they already know what you would otherwise need to learn.
Your budget is much higher than you will likely need to find a great mattress 
They are very different but I would not call one “better” than another. It’s about personal preferences and of course you would need to test both in person to know which you prefer. No matter which you prefer though … the quality of the material you choose is important for durability and performance because every material has better and worse quality versions. You can read more about the pros and cons of memory foam here and the pros and cons of latex here.
The better options and possibilities in the Austin area I’m aware of are listed in post #2 here.
If you read the linked information and follow the steps one at a time it will keep you on track and headed towards the best possible mattress … for YOU
Phoenix