Every Designer & Developer we know loves Flywheel. It is specialized on WordPress and take care on about just everything. Site Migration is free and further they take care on Caching (you dont need any further caching solution installed in WordPress), Backups (no need for additional backup plugins which slow down your website) and staging (one click and your staging environment is ready to go)
Dreamhost is yet another webhosting company up to the top. Beside the focus on WordPress specific Hosting, they also offer high quality webhosting, dedicated hosting and cloud hosting. Everything is very easy to manage through their beautiful and intuitive designed administration panel. Now at the age of 20 (founded in 1997), they really matured and became a truly professional hosting provider and never let you down
We never came across a single customer who had anything bad to say about WP Engine. As pioneer on this WordPress-specialized webhosting they simply know what they do, and they do it great. They’ll migrate your site for free and also lets you install a free Let’s Encrypt SSL Certificate. And from technical standpoint they’re fully up to par with what someone would call “Professional Hosting”.
Especially for german-speaking users of WPCasa we can strongly recommend HostPress. It is probably the first WordPress-specialised webhosting company in that area and since they’re operating from within Germany they have probably the most strict privacy laws to fulfill, resulting in peace of mind when it comes to data safety.