While BlueHost and FatCow were okay in the past, I was a little surprise to see both making into the Top 5 list this month.
For reviews and more info on each host, visit the following:
The attached image is the uptime record for InMotion (I am testing on their Launch package). Please visit the original post for more details: http://www.webhostingsecretrevealed.net/blog/hosting-updates-news/host-uptime-march-2014/
Credit: Uptime tracked using http://uptimerobot.com/