SRAM works like "top normal". It tends to have a heavier, more mechanical feel than Shimano's light feel. IME it is less prone to having issues in mud and wet than Shimano.
I recommend you head down to an LBS and test ride a new bike with SRAM on it, both systems work but you'll either like the feel of one or the other.
I recommend you head down to an LBS and test ride a new bike with SRAM on it, both systems work but you'll either like the feel of one or the other.