Before I begin my review, I should start out by saying that I am a bit of a blender snob, and I collect them for fun. I didn't really NEED a blender, but I saw the display model at Best Buy and couldn't resist.
That being said, I am very impressed with this blender. It is consistent with the quality that I expect from Oster. It blended the same Strawberry Banana Smoothie that I always make MUCH better than the 7-year old KitchenAid blender that I often use - no chunks whatsoever. I tested the ice crush feature, and it made mince meat out of ice in 2-3 seconds. In fact, I would dare say that it crushes ice perfectly, and faster than any of my other blenders. I also appreciate the Easy Clean feature - a definite bonus. I like the metal drive shaft MUCH better than the plastic teeth on the KitchenAid and Cuisinart - there is no guesswork as far as where/when to place the jar on top of the base; no teeth that could potentially break/wear (note: the teeth have never broken on my KitchenAid or Cuisinart, so I am just speaking about potentialities). The jar is designed for MUCH easier pouring than any other blender I have used. If you are at all concerned with the presentation/appearance of your blending results, this blender certainly delivers.
Why a 4-star instead of a 5? The plastic collar is much more fragile than other blenders I have used (also, more fragile than other Oster's that I have seen).
The rest of my cons are very nit-picky and may not bother most people.
If anyone is familiar with the smell of a new blender motor, this blender (along with Cuisinart and Waring blenders) has that new motor smell if you let it run for more than 15 seconds. Personally, this does not bother me, but I have noticed that it makes some people nervous. My initial ice-crush experiment actually produced ice that was infused with the smell, but a few good cleanings should solve that problem.
The lid is not the best I have ever seen - It does have a removable cap in the center, but it is black and does not have measured lines like the Cuisinart.
Louder than the KitchenAid (KSB5ER4), but quieter than the Cuisinart (BFP-10CH).
Despite these minor things, I would highly, highly recommend this blender!