I have had a Vitamix blender for 10 years.  I recently upgraded to the A2500 and my son inherited my original which still runs just perfectly.
If you have ever used a different blender, which I had the misfortune of having to do for a couple of months, you will realize how well worth the price a Vitamix blender is.
The A2500 is great, like the auto setting for smoothie as this is something I do almost every day.  
Simply, Vitamix is the best and the A2500 is excellent