My impression is that the newest Vita Mixes have some sort of a new material that the jars on the latest models are made out of that are supposed to be bisphenol A-free (and I think same kind of thing with the Blend Tech - different new material also bisphenol A-free - if I understand correctly - but do your own research).
This
review compares a Vita Mix with a BlendTech and also as Oster that seems to run in the $80 range and has a glass jar/pitcher - I'm down with glass and $80 price but I'm not sure that it would do what its suppose to do for green smoothies - which I think is to break down the cell walls of plant material so that the nutrients are released and more available for optimal assimilation of nutrients.
Montel Williams offer (or endorses???) the
HealthMaster. I'm not sure about what the jar is made of or what the top speed is (I think top speed is the crucial attribute for breaking down plant cell wall and basically liquefying stuff that once was solid) - it seem to be less expensive than the Vita Mix and the Blend Tech . . . . and I've always had good feelings toward Montel Williams.
I have a kitchen aid blender that I bought because the jar is glass and because it is pink and it looks heavyduty but I'm really disappointed with how it makes smoothies - I actually think the Magic bullet does a better job - but again plastic.
I have to admit that I still sort of want one of the stainless steal vintage Vita Mix ones -Ance Be Gone Fairy (oh. if there was only a "Cellulite Be Gone Fairy" who was willing to advise me on things) may I ask which of the older stainlees models you had? (Do you think it broke down plant cell walls??)