The first thing you want to know about them is support - is it there 24/7? And when I say 24/7 I mean a human sat there waiting to answer questions, not just a help desk ticket. Also make it confirm whether they have a physical access to their servers and a good SLA in place with their data center to replace server, in case of any hardware failure. I know this seems like a rant, but its not...
I think you should look for reviews on their services. I've done a research on Simplehelix name and can say that you really could rely on them. You will receive high performance solutions with skilful support team and 99.9% uptime.
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He dares to be a fool, and that is the first step in the direction of wisdom.
I think that you've made the great choice. As I see Simplehelix.com is offering high quality plans with strongest support and rock-solid solutions, you won't regret.
Have you read the reviews about this provider? You should also look for a company that has excellent Customer service because in the long run you are going to need help and or Tech support.
despite of litespeed server I think there are more reasonable deals at santrex.net where also litespeed and the same application support. but at lower costs.