'Friends dont let friends use OVH'. Just google OVH and how horrible they are, every few months they have some gigantic filure - last time I've heard it was taking people money and not delivering servers for MONTHS.
I have no clue about the reliability of OVH, but I would definitely not say AWS is short on failures. At a scale of ~2000 instances, it's really not uncommon to encounter a bunch of AWS instance failures every week. Multiple times per year we see a massive failure that affects a large number of servers. The saving grace with AWS is that usually the problems are limited to a single availability zone so as long as you're redundant across multiple availability zones you can survive.
That would be anecdotal if it wouldn't happened to me twice. I won't ever use them again, nor recommend them to anyone, unless they're masochists in nature ;)
Same as all replies. 3 years using OVH and not a single regret. Don't confuse dedicated ovh servers with their sister brands kimsufi and soyoustart, which has less uptime guarantees. Also OVH VMs suck, from my experience. But their dedicated server line is completely reliable. I use T3 servers and will start testing T4 servers (everything redundant) next few months.
Counterpoint: I've been delighted with the last couple of years at OVH, as have several people I know who use them for dedicated servers.
I also host a few servers at Hetzner and have nothing but praise for them. I've found network performance to be way better at OVH - think it may be a your mileage may vary thing, though.