I aksed myself that question, and it came down to how many gig I needed rather than would like? My Samsung Note 10.1 has 8Gig on board and 32 ext, and that's plenty much even for a tab, the card is full of music just because the space is there!
On top of that Google drive give you a 10Gig free cloud, Mega give you 50Gig free on the cloud. I came to the conclusion that 32Gig is more than enough for me. 32Gig is actually about 25Gig once you take the OS into account. Interestingly though the usb storage menu is present on the phone, ghosted.
You'll find it a world away from the Desire, streets ahead of Samsung too I think, I'm not a fan of amoled screens now that I have lived with them both, tft is the best. Build quality is stunning too, it feels like a quality product in your hand.