I had a couple saffire dsp units for years and they were very good... Upgraded to the Forte and I'm in heaven for the improved mic pres... I would imagine what you sacrifice by not waiting for clairet compatibility is the pre's... which you can get with the Forte.
 
the Clarett is appealing for latency but it's gonna be awhile.  Try the Forte or the 6i......heck, I tried three before deciding the Forte was exquisite!  You can always return it.

8i6 and 2i4 here. They work great.

Talk about an overwhelming Focusrite user base.......count me in as well....Scarlett 2i4 on Win10 x64.  

I've had the Focusrite 18i20 for a little over 2 years and it is still working great.   I am also quite happy with the Scarlett Mix Control.  It provides a good deal of flexibility for providing different mixes to musicians.
 
My only minor complaint is that the Focusrite preamp gain was insufficient for my ribbon mic. (This is actually a fairly common issue with ribbon mics.)  I purchased a Cloud Lifter, which is an inline phantom powered amplifier to boost the gain before it hits the mic. pre.  All is good!

Scarlett 18i20 here and working great!!
I record monitoring with fx, no problems.

JCB
Hi, I have a new computer and am looking for an Audio Interface. Two that look good for my purposes are the Focusrite Scarlett 6i6 USB 2, or the new (yet to be on sale) Clarett 2pre Thunderbolt. There is a noticeable difference in price between the two. The Clarett range have new pre-amps and Thunderbolt. I would very much appreciate and value any insights and experience you have with the Scarlett and Mix Control, even the Clarett range since the 8pre versions have been released. I have had very good experience in the past with Focusrite pre-amps and past service from Focusrite Tech Support.
 
John.

Thank you everyone (a lot) for your comments regards my query. I have ordered the Scarlett 6i6. It seems to have the I/O that I would prefer and there seems to be a lot of very positive comments. Unfortunately, the Clarett drivers for Windows will not be available until next year (according to Focusrite). So, I'll see how I get on with the 6i6.
 
Thank you again, much appreciated.
John.

I have been really happy with my 18i20.  I did have an issue when I first upgraded to Windows 10 Pro.  ADAT streaming caused it to crash.  I emailed Focusrite and they sent me a link to beta MixControl software and drivers.  That took care of it.

I have a Forte...and it's still using the same driver that it used with Win 7 on Win 10....and it works flawlessly...
It has the Rednet Preamps in it, which are Focusrite's flagship Preamps...and it is a a masterpiece...
My brother uses a 2i2 and couldn't be happier...so any of the Focusrite interfaces are worthy...