If you are looking for more that "150" power then it is not the engine for you to choose. (You mention you are looking for a 150 - 170)
Performance is very similar to a DA 150 - but less than a DA 170.
I have been flying one for just on a year now (Yes, I am a dealer). It is a fine engine for a 150 and it holds it own against the common brands of 150's out there but I haven't found it to be a match for a 170 of any brand.