I have this model and it has been a hate/love relationship. First off, yes it will blend just about anything with a few caveats. I make fairly large volume protein shakes in this 3-4 times a week with the following ingredients:
16 oz lowfat or skim milk
1/2 frozen banana
~2 cups of frozen berries
1 handful of almonds
1 handful of walnuts
2 tbs of ground flax seeds
1 tbs of chia seeds
2 scoops of protein powder
The main problem when I first purchased this was that I followed Blendtec's instructions for blending these components which are flat out wrong. They instruct you to start with liquids then soft solids then the hard solids. Don't do this. The smoothies turned into warm mush that were hard to even swallow due to the strange consistency created by the high impact blend process. I almost threw the damn thing in the garbage after several failed attempts at making something even close to drinkable. Then I turned to the net and was delighted to find that other's had found the solution to this conundrum. The process I have tweaked to near perfection goes like this. Start with the liquid, of course, add the frozen components and pulse in short bursts until you have ground these to the consistency of couscous. Add the nuts and pulse again in short bursts to grind these to the same consistency. Add the protein powder and ground seeds and start out on low for ~10 seconds and then finish the cycle on medium. The blender will shut off after 50 seconds. Perfect smoothies that are still cold and of a great texture for easy swallowing after a grueling workout.
Not to nitpick but there are several things wrong with this blender.
1-You have to hold the blender down when blending - ESPECIALLY when using the pulse mode which blends at very high speed. I have a 50 year old Sears Kenmore blender that still works that has a glass jar that LOCKS to the motor base. This is a major design flaw that can cause real problems if you're not careful.
2-The motor to blender gear/spline ratio is either wrong or the engineers cut corners in design. The strong force that this thing blends with creates heat and friction at this juncture that will leave you with a carbon/steel residue after almost every blend. Especially if you don't hold the blender down during the process.
3-I'm not a fan of the 'Wildside' jar and semi-dull blades. Nobody has convinced me of the science behind this. All this does is create more heat during the blend process. What is wrong with the cylindrical design of the jar and sharp blades of the old style blenders? This design also contributes to the instability of the jar during the blend process. Stupid, imho.
4-The lid sucks. First off, it leaks and the outer part is made from some type of hard to clean rubber.
Like I said in the opening, it's been a journey of hate to love with this beast. If I had to do it over again, I'd probably buy a Vitamix.