There is no single answer because it depends on the vision you have for your website.
Squarespace and Wix are built for everyone. General purpose platforms given a little love to appeal to photographers, but at their core they were never built with photographers in mind.
Tonic Site Shop offers beautiful Showit templates with a lot of design detail, which works well for some brands but can feel like a lot for visitors who just want to see your work.
Showit has many designers to choose from, you have to find one you love.
Pixieset is built around client galleries and business management. The website side is there but it’s not their primary focus.
BluDomain has been known in the photography industry for over 23 years. Clean, modern websites built mobile first. The easiest editor. Built exclusively for photographers from day one.