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VPS accounts from hostsailor.com and rockhoster.com are attractive for me and I wonder which way is better to follow and why?

Really cool experience. Rockhoster.com is the most reliable Linux VPS hosting service I have ever tried before.
The most servers have 100% uptime, they guarantee a standard 99% uptime on all their services. Server locations: Canada, USA, United Kingdom, Germany, France, Netherlands, Lithunia, Belgium, Spain, Finland, Ireland, Italy, Poland.

$8 per month.
https://allwebhost.com/vps-cloud-server/

HostSailor.com is top web hosting provider to deal with. highly recommended.

I must say I've saved good money and the hosting has been rock solid, fast, and as I've had no issues with service can only say when I caused an htaccess error due to some sloppy ftp handling and brought down all sites - they got back to me in no time and politely informed me of cause of issue and quick fix.
Their service's uptime is as promised: 99%, it seems more like 100% to me.

If you are looking for the quality services - check https://legionbox.com/virtual-servers/
I think it is the best price / service combination here.

You can rely on Rockhoster.com web host. It provides a high-quality, multi-redundant network at an affordable price. They are always quick to respond to any issues. Customer service and tech support is second to none. The staff has always been friendly and knowledgeable with 100% follow-up. I would recommend anyone with hosting needs.

Very happy with the service I have had from NetShop-isp.com.cy web host over the past few years - both for my own web & email hosting and that of several of my clients that I have recommended use their services. The customer service is always very prompt and polite, and their technology has never let me down yet. I wouldn't hesitate to use them again or recommend them to others...