Williams-Sonoma, Sur La Table, and even Peet's & Starbucks are --
sadly -- the "best" one can do in the average situation. And for someone
serious about espresso equipment, I can recommend none of the above.
As Marshall quite rightly points out, manufacturers like
Salvatore (Solvang),
Astra (Canoga Park), and
Pasquini (LA) only carry, understandably, their own machines.
In alphabetical order, I have purchased equipment online from, and have been very pleased with the service I've received from:
Based upon the comments of other regulars here (and elsewhere), I have no qualms about recommending the following, also in alphabetical order:
Good luck!
Cheers,
Jason