We upgraded the A2500i from our 8 year old vitamix as you can use the to sizes of mixing cups as well as the jug, it has been fantastic! 

The small cup is great for cashew cream, pesto  and small portions, the medium cup is great for indiviual smoothies and sauces and the jug for everything else so we now use one blender instead of 3

Minor issue getting the blender to recognise the cups but we have the knack now