Bibs are just more comfortable if you ask me.
For really tall guys, check out
Bicycle Hub they have a section for Xtra Large clothing.
Right now my favourite brand of bibs are Etxe-Ondo, they
have a chamois that feels like REAL chamois, and the fit
is very good, and their top of the line bib is less than
$125 (what does top of line Assos go for?).
Also hear good things about Santini stuff.
Check out
BullTek Sports , talk to Xavier (one of our moderators,
so support him!), he also carries Etxe and Santini.
Marty