Simple Mobile??

I just found this through Amazon and decided to check it out further.  They seem to be the most reasonable for a short trip (for me anyway) on minutes, texts and data usage.  I'm looking at their $40 Unlimited Plan, which includes free international texts (internet is 2Gb for the month).  The SIMs come with $5 international credit, and their call rates to the UK are very reasonable (about $0.02 to landlines and $0.10 to mobiles).

They also do Micro SIMs and Blackberry plans.

My only question is: has anyone ever used them before when visiting the states?  And is it really that simple?  

Tellytabby, did you ever find out anything more about this? 

Tellytabby, did you ever find out anything more about this? 

No, just what's on the website and what I've posted here.  I haven't been to the states yet and would have to get my mobile unlocked, which I don't think I have time to do at the moment.  I think I'll just stick with T-mobile US as you can then transfer your "credit" towards their gold reward status, so I can keep the mobile number for a year...

Cool 
I was thinking about it for when I take a holiday there at Christmas, if I do it, I'll let you know how it goes 

we also use the t mobile gold but would be interested in what you find out!!!

I don't know about this but I did buy a sim from mrsim.com and I had no problems and I had 2 months worth of service.
Worth checking out - call as emailing doesnt get you very far.

In case you need additional options