So, you want to know about 'bents? First you have to know a little about the different types of recumbent bikes. (And also know it is spelled bent not bant .

In gereral are they faster than wedgies? Yes and no. It does take some time to develope 'bent legs. You use generally the muscles down the center of your thighs more than the outside. Also the type of 'bent will determine how much faster you will be.

The different types of 'bents are based on wheel base and handlebar location. They are:

Short wheel base (SWB) Pedals in front of front wheel.
Long Wheel base (LWB) Pedals behind front wheel
Medium Wheel Base (MWB) Pedals generally above front wheel

Above seat steering (***) aka Over seat steering (OSS)
Under seat steering (USS)

With that said, the best 'bent for speed is SWB & ***. Reason being is areodynamics and weight.

As far as hills go, with practice they are as easy or easier than on traditional bikes. Yes you can't stand up, however, you can push against the back of the seat with more force than you get from standing up.

I personally own a Vision brand SWB USS. Vision is a good brand with prices from around $1000 us and up.