All US and Canadian consignments are sent with FedEx 10:30am service. Whether they actually arrive next day is generally down to US Customs (the bain of my life) but the majority of packages do make it on time.
Consignments to the rest of the world are sent with TNT (who have much better global coverage than FedEx) by International Express (or Supamail for the UK). Delivery times vary from next day (to central Europe, UK, and some others) to about 4 days for remote destinations.
We don't offer a non-express shipping option - trust me, you wouldn't want the hassle for a saving of just a few $$'s.
Rob