We have been using siteuptimewith our clients for some time now, it's pretty much perfect as far we know so no complaints here! It has never failed us in any way that is worth mentioning (knock yourself out if you can find one!). The only thing I dislike about this service are its costs - but since they're shared with all their customers to make sure there isn't an issue regarding reliability of uptimes or downtime issues when needed by client side developers/admin users etc., then what else could be better than having such great support? Our main concern was always reliable online access which SUI helped ensure via multiple checks throughout day & night times during weekdays too!!