Do you like their USB or Firewire stuff, and if you've a preference, why is that?
 
I am probably going to get either a Saffire PRO 14 or a Scarlett 6i6 since I need an interface with S/PDIF out (that's all I need, special purpose interface, not a general purpose one). Trying to decide if there's any compelling reason to get one instead of the other.

If you have a choice go w/ USB (which seems to work fine from reports here).  I love FW, but it is no longer a standard for most interfaces and just about every computer.

When I bought my Focusrite Saffire firewire interface...firewire was faster than USB so I got that, and still have it. It works fine and I've not had issues with it.
 
If I were buying today, I would opt for USB since that has come along nicely, is faster than FW now, and is more widely compatible.  There are some folks who experience chip compatibility issues with some FW chipsets.  That's not an issue on USB.
 
my 2 cents

My Saffire Pro24dsp bit the dust as my very old cat had a fit behind my DAW and dislocated the firewire cable...way too costly for a cable coming disconnected... USB all the way...

In my last audio interface upgrade I started with a FireWire. But I was informed repeatedly that it was going the way of the DoDo bird and it was finicky. I discovered it was finicky. I had some weird connectivity issues where it would work sometimes, but not others.

Luckily I was within 30 days of my purchase back then and switched to a Focusrite Scarlet 18i6 which is USB. Connects every time, I can pull the USB cord out any time I like and plug it back in and it works without a hiccup.

And the audio interface is really good. I actually have 2.

I've never had a problem with my ageing Saffire Pro 26 running on Firewire - it is virtually unbreakable (and i should know )
 
My smaller Saffire 6 runs on USB and isn't quite as bomb proof as the 26, and i can't get a similarly low latency that the 26 provides without dropouts or the Rice Crispies effect
 
Either way, I think Focusrite make some superb interfaces at all sorts of price points. you won't be disappointed

I really love my Scarlett 18i20!!
Great performance, latency is great for my needs, and the best of all is it's sound and preamps.
 
Good luck!!

If I were buying today, I would opt for USB since that has come along nicely, is faster than FW now, and is more widely compatible.  There are some folks who experience chip compatibility issues with some FW chipsets.  That's not an issue on USB.
 
Just to say the latency and performance is still better with Firewire than USB 2 (firewire 400 is around 25% faster apparently, although take that with a pinch of salt), and even better if you only have one device running one dedicated interface. If there were any USB 3 interfaces available than sure USB would be faster than firewire, but then Thunderbolt could throw a spanner in the works... one day....
 
In the real world firewire is without doubt faster right now.. Maybe not for very much longer...
My Firewire Saffire Pro 40 is running on an ASIO buffer size of 128 right now, I may risk 96 soon. 
 
Thanks
 

 

 
 
Here's a Focusrite article:
http://uk.focusrite.com/news/which-interface
 
 

I'm looking to replace my old Line6 Toneport audio interface as it seems that Win 8 drivers occassionaly drop out and I have to keep re-installing the drivers.
 
Been reading a lot on the Focusrite Scarlett 2i4 and this looks to be one that fits my needs/budget. I'm hoping that the Win 8 drivers (ASIO) for this is stable. Any downsides to their support or on this 2i4?
 
As of today, B&H has it for $163 (US) which is a pretty good price.  

CakeAlexS In the real world firewire is without doubt faster right now.. 

 
It's not so much that its faster, but that it has DMA, Direct Memory Access, like PCI does. That equals lower latency which is what we are after for audio. Bandwidth isn't a big issue.
 
I know that Firewire is technically a better interface tech for audio, my concern was about Focusrite drivers n' support n' such in particular.
 
I opted for USB for now. I do not need low latency at all (2000 samples is plenty fine).