Right server to sign up with ...

[BIsquit]

Comparing servers from owned-networks.net and hostsailor.com, which way is better to follow and why?

[President]

Please, be more specific... I mean requirements: disk space, bandwidth, server location, budget?

Well-balanced dedicated servers you can find at GTHost.com and also NetShop-isp.com.cy web host.
As for their technical support department, they are great, great, great - the best and they seem to be pretty well-experienced and knowledgeable for it.

[holland]

Servers from hostingsource.com and planethoster.com are worth trying.
Super friendly customer service, affordable pricing and superb uptime.

[№Lucky]

Try narrowing your list of options by looking at the cheapest web host package that can meet your needs at the same time.
Do not compromise what had been planned about for the web site just to meet the level of what can just be offered with the cheap web hosting package.

You can rely on these time-tested professionals:
1) ServerUnion.com
2) ZipServers.com
3) Midphase.com
Experts are able to help you with everything you may need (scripts installation, etc.) for free.