Phone with the best bluetooth range?

Hey,

I am looking for a phone with the greatest bluetooth range. What are
my best options with Ericsson?

It needs to be BT2.0, but, is there a difference in range between
various devices? Or are all phones pretty much 'Class 2' with only the
standard 10m range?

Also, there are dongles for laptops that extend bluetooth range to
'Class 1'(about 100m) but are there 'dongles'
for phones that can boost the standard range?

Can anyone help me? I can seem to find a lot of reference material and
I dread having to go in and listen to the teenager at the store in the
mall.

Thx in advance,
Noah