Terri,
I really think you must evaluate the use of the product you are considering to buy.
Do you need a headphone amp that does double duty as an excellent preamp. You see, you might be paying for features you do not need.
Many people actually like to have dedicated headphone amps and preamps. It really depends on your preferences, budget and intended use.
If you are looking for an integrated headamp/preamp, others to consider beside the B52 are Singlepower Maestro and higher, Rudistor, Headamp and Meir amps.
Also, do you want tubes or solid state??
I went with an excellent solid state headmp/preamp because I fell in love with some tube power amps. My solid state just blends in extremely well with the tube amps and the sound is just unreal (for my speaker based system).
Anyhow, please research and know your preferences before you commit.
EDIT: Also look into aspects of synergy. Good synergy can easily outweigh multi thousand dollar components that do not work well together. Buying the best components does not guarantee the best sound...at least that is what I have seen so far
Good luck!
~G