I have used hover for over a decade. Clean and straight forward interface. Free private whois. Never had a single issue so I highly recommend.
Their parent company also owns a postpaid cell service provider called Ting that they operate with the same care and efficiency.
Great people altogether
I started using Hover/Tucows back when they were Domain Direct, as I liked the idea of using a Canadian-based registrar. Hover has been great. I've rarely needed to contact Hover support but they've always been responsive and helpful.