I am not impressed. After flashing and restoring my applications, the phone seems extra sluggish and seems to have locked me out of recovery mode. When I tried to set my alarm for weekdays, I was fighting the phone to click the days of the week. I was pressing Monday, Tuesday, Wednesday, then the phone took several seconds before showing up the change, then unticking them, and ticking them back on again.
I reflashed my recovery from 4EXT, since I could still get into the main OS, and now I’m reflashing from my image back to my albinoman build. This Flemmard build is going on my “do not use” list.
I am not impressed. After flashing and restoring my applications, the phone seems extra sluggish and seems to have locked me out of recovery mode.
Reflashing my phone again. Using Cyanogenmod again, this time, a different build. This build is V4.4.4 instead of V4.4.2 which is the one on the albinoman build. The build is also later than albinoman’s one, so might contain some fixes to problems encountered in V4.4.2.
Restoring my backups as I type this post.

First flash is an unofficial version of Cyanogenmod 11. This is the version I currently have, but I’m doing a full reflash due to the problems I currently have, which I wonder if it is down to the fact I didn’t do a superwipe when switching between ROM variants.
Generally, you should wipe or superwipe your phone if you are moving from one ROM variant to another, and not wipe if you’re flashing an update to the currently installed ROM.

My experience of Carbon ROM has been short and a mixture of good and bad. Good in that there were some very nice features, but bad, in that the whole ROM seemed to not be too responsive. Less of a problem with Carbon ROM compared to the last one I tried, but, still, definitely noticeable.
I’ve taken a quick look at XDA and found a couple of other ROMs available, so I’m going to download them and give each one a go. 4Ext really helps with the backups.