Whatdya know. I just bought myself a pair 2 weeks ago so I am the very person you need to speak to about this topic!
Firsatly no need to import them from England and pay a hefty postage cost. Just give Revolution Racegear a call and they can deliver to your door or go and pick them up for pretty good prices. Minisport in SA also sells the package including subgframes. PM me for the Revolution prices.
Secondly there are 2 types, Cobra Classic and Cobra Cub seats. The cub seats are for people with wider bums. They aren't as supportive and IMO are no better than std seats except that but both seats can be set up to sit lower than stock seats (by miles) and they are more comfortable as you're not sitting up right. The cub seats are also much more expensive. The newer Classics are the best. "Newer" in that the slightly older models had softer seat cussions which sit higher. The newer seats are firmer but still supportive.
For me the classics are very very comfy. Miles better than stock seats which were giving me a bad back and more comfy even than the Cobra Clubman seats that I used to have as the padding is abit newer and there's more of it. I find the classics give me the optimum seating position in the car. Nice and low with enough leg room the reach the pedals and not "perched up" like a stock seat which was giving me a bad back after a short drive.
Regarding the headrests, I think 1) they look crappy, 2) won't save your neck on a heavy rear end impact, esp if you are a tall person as they only reach up to the top of my neck which means my head can still whip back above them and 3) may interfere with rear access as the headrests hit the roof.
To me the non headrest version looks the best. Nice and period looking. I reckon the headrests look like afterthoughts rather than designed to look like they fit...
I got all black ones even though I do have red interior highlights. I think the red piping does look hot on black but I am not prepared to pay extra for that. No idea about all red seats. Either way they look a $million once installed...
Lastly the cobra subframes: to set them up so that they sit nice and low they need some modifications. the hole that you want it to sit on is the very top one closest to the frame. But in order to do that, the bracket gets in the way so with a angle grinder, just lop off the 3rd hole and keep holes 1/2. I find that mounting them to the middle hole on a std seat bracket and pulling the seat right back gives the best seating postion (this includes a steering wheel lowering bracket.)
IMO best interior upgrade I've made in 7 years!!!
Any questions just ask!
