Pedal assist generally means around 250 watts and a top speed of around 20mph. More than 500 watts or more than 25mph is generally an electric bike. Anything above 250 watts is going to blow away what you are capable doing by yourself, making your contribution a token contribution at best. Besides, 25mph is pretty darn fast on a bicycle. Those are racing speeds on a 16lb bike, and quite fast on a bike that weighs over 50lbs.
So, do you want something that assists your pedaling, or something that does the bulk of the work for ya?
As for biking daily, it is a lot of fun on an ebike!