Has anyone that owns both of these compared the extent to which they aerate food? I just got the Vitamix 750, and while it works great, I find that when I make thick soups and smoothies, the mixtures end up seeming like they have a lot of air in them. Essentially, they appear to be dense, stable foams where the air bubbles are too small to see (like whipped cream, for instance, except with not quite that much air). My Vitamix does appear to aerate more than my Braun MX2050. I'm therefore wondering if this aeration is an unavoidable consequence of high-speed blending (in which case the Blendtec's results would be comparable), or if the Blendtec's different design might aerate food less (the blending action of the Blendtec does appear to be somewhat different from the Vitamix's).
For instance, here's a soup I made last night: ~10 raw Brussel sprouts, ~10 raw frozen baby carrots, ~1 cup water, 1.5 tbsp half-and-half, 5 peppercorns, dash of salt. Blend until well-mixed (ramped up to max, kept it there for ~60 seconds). Granted, the presence of the cream would tend to cause foaming. I suppose I could have left it out and added it at the end at slow speed (maybe I'll try that next time). Likewise my smoothies have a little olive and coconut oil.