Which VPS should I choose as I plan to host a blog - kvchosting.net or legionbox.com?

Think that you need to widen the range of your search. Take a look at Rightservers.com Managed VPS.
What is so important is you always experience you are not alone dealing with customer or tech support.

I first contacted cloudarion.com support staff for help with one of the packages, I could tell this host was a keeper.
The support staff were so kind, and even transferred my existing reseller at no charge. The pricing is cool. Recommended!

Absolutely GREAT customer service! I love being able to chat with Kvchosting.net 24/7 support with almost immediate response.
They are already set up and ready for Joomla and similar applications, and the customer support has always been prompt and helpful.