Dislcaimer: I work for a partner (VATC). The experience should be the same or very similar - the same course materials are used, the instructors are measured the same, the lab equipment has to be of a certain specification as a minimum.....
Not all VATCs offer the same experience necessarily, for example I'm proud that Global Knowledge UK (who I work for) have an excellent lab setup in terms of our equipment being of a much higher standard than required (even VMware's own) and the lab documentation that accompanies our lab is also of a very high standard.
Scott.
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See http://www.globalknowledge.co.uk for official VI3 and vSphere 4 training
See http://vmwaretraining.blogspot.com for my blog on VMware training and certification