What functionality are you looking for with your template? What specifically do you need? From an aesthetic standpoint, there are thousands probably. What are your requirements?
Ideally I’d like to identify a recommended source/s from which I can hopefully find suitable templates over time that will allow me to have confidence in the source & get used to e.g. how their templates are edited etc.
(I did this with WordPress templates where www.studiopress.com was recommended to me on Site Point.)