I have one very similar to the hand pull one, and a big (well, normal sized) version of the electric one.
The hand pull one is brilliant for mushrooms, pesto, salsa, herbs etc. It can cope with raw nuts too. I hadn't dared try as the blades are quite thin and flexible, and I was worried it wouldn't hold up to tougher things, but my mother in law chopped a load of nuts in it for granola and it worked fine. I don't think it would do well for roast nuts or carrots, but it might. It is a lot faster than I expected, only needing a few pulls to chop a half load. It also cleans surprisingly easily too. My blades and bowl go in the dishwasher.
I imagine the electric one would be fine too. Better for nut butters and harder vegetables. It will be easier on your hands as well (not that the pull one is very hard). It might take more space to store, and obviously uses power. It may be more durable. Cleaning is similar.
I hope that helps a little.
