SDHC card compatibility

[Co_Sma]

I'm very curious to know is for real a difference from stock card SD (Sony's package) and another SD card (8 Gb, 16 Gb, or even 32 Gb) with 6 or 10 Class. Not capacity of storage is what I look for. For example a  16 Gb 10 class SDHC card is fully compatible with X.Ray? I will notice any difference with transfer rate. What manufacturer to choose (for compatibility) ?

UHS-I it's compatible with Xperia Ray?

[Veresova]

The manual and data sheet this information not found.

The Sony site says:

Expansion slot: microSD, up to 32GB

[Co_Sma]

10x for your answer. I want to buy a new micro SD card and I want to know if this card can be used to full capacity regarding transfer rate - if I Buy a new class 10 card and my Ray can't transfer big amount of data than I didn't a big deal and will be safer to stay with my default card. I want simple answer from Sony Support Team:

- supports or not fast protocols like UHS or another

- supports or not class 4, 6 or any higher class at full parameters

- can handled this increase transfer rate and will be any differences for user for ex. when I save my movie taken with X.Ray in theory should be faster.

This is very simple and if Sony don't want to say some manufacturers names don't tell but some specs can be published regarding micro SD compatibility. Now, I'm very doubt regarding to upgrade my card becouse of this 'silenzio stampa'.