seo hosting vs Idea stack

Looking to get a blog network up and seohosting is 67$ for a 10 c-class and idea stack has a 50 c class for 50 bucks. From what i see they offer the same. am i missing something?

be careful because the DNS is the same, so even if you have different IP, your sites share SAME NAME-SERVERS!

seohosting.com is owned by a big well known hosting company. They have good uptime and all that but all IPs are in same C-class and I think they use just one DNS server for all.

ideastack looks good but uptime is pretty bad

seo-host.com is worst of all - 700% server load at times, over 100% load frequently. When sites do load they load extremely slow.

I wouldn't go near ideastack.