I love my Gmail account, but the most aesthetically pleasing (Is that right?) would have to be @live or @aol. Nice and short.
If you are trying to look professional definately @live, since all the other ones are much more popular. In terms of use, gmail is probably the best.
I prefer the usability of the Windows Live/Hotmail interface, but Gmail has the better reputation as being non-spammy!
like someone said i've got them all...but love those cool hotmail ones that allow many really cool names
I guess gmail. But although you weren't asking that. The service means alot more to me than the domain.
Depends on what services you use. You pretty much have to use at least one to access windows live services and one for gmail services. If it would be down to the name preference I would go with @live.com . It sounds more professional and short! Short somehow always translates to professional imho.