If you don't drive in the snow much, then it would not be worth getting the WeatherPeak.
Both tires are relatively new, so you won't find too many reviews on both yet.
The Alenza line is also purpose built for CUV's and SUV's, which is why you won't find them on a Accord, Civic, TLX, etc. And has a 107 load rating.
The WeatherPeak has a 103 load rating.
See owner's manual or the tire size/inflation sticker for the minimum load rating required.