Should I use a VPS from hostingsource.com or rockhoster.com as I plan to host a blog?
What do you think?

These companies - hostingsource.com as well as rockhoster.com - are worthwhile.
Great hosting. Awesome pricing. Super-fast servers.Support is quick and exceptional. All tech support is done through an online ticket but they are fast to respond and they truly care about helping you.

Try out the web hosting service, MyResellerHome. Our VPS hosting packages begin at $59.95 per month. It features services such as operating system selection, free SSL, full root access, fully managed, and many more. Please see your website for more details.

Deals from libertyvps.net and legionbox.com are the best to sign up with.
Their Customer Support team has always been reliable and well-informed. The price is affordable. You may have to wait to be attended to at times, but every problem is quickly fixed. If you're just starting your business online, save time and money by signing up for their packages.
 

I wouldn't move from Hostingsource.com for anything, not while it's working as great as now!
Get VPS hosting - $5 first month for any plan. Great support, personalized service, and deff recommend.

M2Host is the solution to your problem. Starting at $30/month, we offer VPS hosting plans. Included with this package are a number of useful services, such as the SiteJet builder, Unlimited MySQL Databases, Remote SSH Access, and the Softaculous Script Installer. Feel free to peruse our website for further details.

Well you can  consider checking gthost.com. They have their VPS started from $4 per month.