One the issues I have with the AccuRite systems is that the AccuRite’s cloud-based data storage system dumps all of your data after a month. So you can’t go back in time and see hourly data for December, for example. If you sign up with Weather Underground you can get your hourly (or to the minute) data longer.
I think the way around that would be to set one of those systems up on a PC, as theoretically that should be able to retain the high-res data as long as you want.
The high/low data is fine, but it is much more useful to calculate chilling hours from sub-hourly data than daily data. I do play around with it chill hours, but it doesn’t really matter for me. We get in excess of 1000 hours every year. Though excluding the last 2 years, most of that would come in March rather than January and early Feb.