I have both, the oval version with the central button which I think yours is as well? My other one is a rectangular Huawei one with information screen and push-button, I use this one mainly because I think it works better.
I bought 4GB of data from Three and I don't think I used much of it at all, now I'm back in the UK I don't have a need for it now and as always the data only has a life expediency of 28 days, so my data runs out on Jan 29th.
If anyone wants to use the rest of my allowance in their phone or mi-fi just let me know and I'll post you the SIM card. All I ask is when it's finished can you send the SIM back to me.