Newbie: Suggested Cloud Partner for Application

I am a newbie at this and am planning to use Electric Imp to measure pressure and plot it over time. The application will have a user log in and the user will be able to plot and track the pressure over time.

I have the hardware part of it figured out, and am trying to understand the best cloud application to use with this application.

I do not have a lot of knowledge of web platforms and was wondering if there are any suggestions from the folks on this forum.

I use xively, but it depends on how far back you want to be able to track it.

Check out GroveStreams – great functionality at a very competitive price.