I recommend WPMU DEV
WPMU DEV has so many of the things you need to make a website smooth. It's easy to understand the different plugins and easy to learn.
Also the customer support has been great. They really are available 24/7 (quickest support I've experienced of all places so far) and they are polite, explains things very well and don't make me feel stupid (which I often feel when I have to contact support) for asking about things - even when I ask about things that probably is stupid haha.
And I haven't been that good at checking it out yet, but I love that there is something called Hero Points in here, and the general visual profile is just amazing and makes heavy stuff feel easier. Love it!
All in all, I feel safer with WPMU DEV and it makes my job smoother and more efficient. 10/10 from me! :)
We are surprised and excited by your candid and excellent review! Reading comments like yours make our effort, work and search for constant improvement worthwhile.
Whenever you need help or advice, we will be there waiting and ready to help you!