Namesilo for the following reasons: (1) pricing does not change (goes lower once you hit 50+); (2) free privacy and (3) free 100 email forwarding per domain. Have not tested their DNS yet.

For hosting, you guys really need to get on DigitalOcean instead of doing the shared hosting. For $5/mo, you can put 10,000 domains/websites there with Letsencrypt (free SSL) instead of paying $5/mo/domain