wich nfc reader buy to start in nfc deployment?

Hi

My name is Karlo V. Rdz, i'm a experienced developr for bluetooth under linux

I'm looking to move forward to nfc because the advantages of the technology

We've been looking around and make some research of nfc and found that we have plenty of variety of readers, types of tags, etc.

One of the most important things to get started in nfc is the reader used in development, so i'm looking for your advice in which model of nfc reader buy?

I was just about to order the acr122u reader, but i found some post in the forum about the lack of support of this device and bugs founded.

Now i don't know wich reader to buy.

I found this two models of readers http://www.identiveusa.com/product/cont … scl010.htm  and  http://www.identiveusa.com/smart-card-r … cl3711.htm

what do you think about them?

we are located in mexico, so locally is nearly impossible to get any nfc reader, i'm planning to import them from china or us
so which model of nfc reader can you recommend (one that i could buy online form china or us)

My intention is to develop a multiplatform (windows/linux) application that allows to interchange files between any next-gen phone and a computer using nfc

Also, i've seen that many of the nfc readers came without any sdk or code examples, i don't know if it's possible that using libnfc i could develop the application i'm intend to do

thanks a lot for your help