Should I use a server from legionbox.com or owned-networks.net?
What would you do being in my place?

Have a look at servers from decent hosting providers: coinshosting.com and planethoster.com.
I am so impressed by the efficiency. My ticket was resolved within minutes of being submitted. Amazing!!!

Join the Server Union and save 50% on all dedicated servers, for life!
Excellent and timely tech support, very affordable. They are always willing to take that extra step.

What are stable server provider.
software development company

I'd recommend GTHost.com dedicated servers to everyone. They personally perform all maintenance. This not only allows them to ensure less issues and troubleshoot problems quickly, but also allows them to give you better quality service at a lower price than maintenance that is outsourced to a third party. 

I've recommended NeironVPS.com dedicated servers to all my clients as well as anyone that has been looking for an excellent web host. I am a web systems developer and have uncommon requirements for my hosting needs. Setup was a breeze and it's been smooth sailing since then.

Owned-Networks, usually packs better hardware and network uptime, which is clutch when you're debugging live or scaling APIs. Their support isn't half-bad either, unlike some hosts who ghost you mid-outage. Make sure to eyeball their SSD vs. HDD options - speed is king for compile times. Also, test SSH access, you don't want janky terminal vibes.