My point is that rushing to any "new" standard can leave you with a bunch of hardware of dubious long term utility.... and being "new" it also tends to be more expensive...
Like I said, I just switched to eSATA, I got a "deal" on them
such a good deal I bought a bunch more (3 my first order 14 on my second order)
I remain unsure about eSATAp which combines USB2.0 with eSATA.
But eSATAp enclosures are running >$40 each
Being a DUAL-standard I suspect it will be more successful, but even the "new" exernal enclosures I just bought have USB2.0 (5pin Mini) as well as eSATA and a seperate 5V power jack....
So the enclosures I bought will be useful either way.
I never got suckered by 8track tapes, Laser Disc video or VHS-HD
I see no reason why I should jump to USB3.0 before all the MoBo
makers have adopted it.
As to the specifics of a controller card? I tend to prefer cards that
have a seperate power jack.
I've thrown away Firewire cards that don't have a power jack
and won't buy a any eSATA card without a dedicated power feed.
I just don't like running much power through those PCIe contacts.
If I were only running notebook drives that draw all of 2.5 watts I wouldn't worry about it, but with a desktop drive? or a DVD burner?