I looked at the breadboards at Webtronics that Gogo linked to.
What is the difference between
"Solderless Breadboards", e.g.
http://store.yahoo.com/webtronics/wb-102-j.html
and
"Solderless Proto-Board System", e.g.
http://store.yahoo.com/webtronics/pbprp.html
apart from the price?
Thanks.