We have about 8 or 9 dedicated servers at OVH right now. Things we've noticed:
- Yes, UI sucks
- No autobilling
- Reboot times are slow (as the actual machines are reboooted, not a VPS)
- You need to upgrade to higher bandwidths for great speeds
- Some routing problems, very rarely
- You really need to know what your server needs are 6-12 months in advance
- Some product offerings way too expensive (eg. Loadbalancer)
Great things:
- Price. Net-net, still cheaper to buy 2-3 dedicated servers than a single beefy VPS
- A lot of sales, like every month
- You get the full resources of the whole server
- Reasonable support for network or hardware related issues
- Unlimited traffic (at least you don't need to worry about normal usage overages)
- DDoS protection
Other thoughts:
In terms of performance, dedi's work great. I've found their OVH Public Cloud instances (not the cheap one, but the more expensive ones) have not as great performance. Might as well buy a dedicated. The only pro is that you only pay for the time you use.