depends on where your surfers are mostly coming from.
for north america and europe webair is hard to beat based on it's location and connectivity.
before anyone decides on which host to use they should go to:
http://www.tracert.com/cgi-bin/trace.pl
and put in some URLs hosted by the webhost and do some
timed traceroutes to compare connectivity to various places in the world.
then ask yourself, where is my traffic going to be coming from, who buys my stuff? for me asian isn't too strong, never has been even when i hosted in california, or AZ.
europe is where it's happening for me.
webair isn't the only good host.
but when you compare all the factors, tech support, price, reliability, and then you throw in connectivity speed to your market i think they are the host to beat right now.