I have access and used the following
Dial up = SUCKS!!! (I am spoiled!)
ADSL at 3 different speed levels from 96 up and 256 down to 512 K up and 1536k down
SDSL at 256 k both ways
Cable at up to 3 mbs down and 15 to 60 k up
T1 1.5 mb both ways
and yes a 1/2 T3 22 mbs both ways.
In many cases the speed means how fast you can update your OS from Microsoft.
On the T3 I find that is not the bottle neck... the otherend is.
It is nice to have bragging rights but the reason for the different
speeds is your applications you need to use.
I use at my shop a 1536k down and 512k up ADSL and discover it is
the other end that slows down stuff.... I can personally use a slower speed
and not have any problems....and save money but like I said "I AM SPOILED!"
I am lucky enough to have a static IP and no blocked ports unlike cable and
most other ADSL modems.
I can load up my ADSL circuit and get the ISP PO at me if I do it for any lenth of time
especially during rush hour...
I have tried to hog the T3 on tests but find that I canot find a site at the other end
fast enough to do that... and I have tried....
So unless your an ISP or a big company a T3 for a single user is way overkill
and very pricy....If you can afford a dedicated T3 even a partial, you have more mony than
GOD! and AT&T will love you....


But remember your needs will determined your speed and type of line,
not just the bragging rights.