My research here on the BCF years back was that there are two fans that do a great job. The Texas Kooler and the 6 blade stainless steel flexible from British Car Specialists. At that time, the Texas Kooler was no longer being made, so my decision about which to get was easy. Now they are both available.
The Texas is made of some stiff sort of plastic like material and is yellow. Yellow being the correct color for the BJ8. The shade of yellow may be off, but at least it's yellow. The BCS stainless fan I power coated the correct shade of yellow. The Texas Kooler maybe paintable too.
As far as how loud both are, I can not speak for the Kooler, being it's not in my car. The BCS is no louder than the stock tropical six blade fan that I replaced.
Our Healeys will heat up in stop and go traffic, no matter what fan you put in, but these two may help a little over the stock fans. As others have mentioned, you need to look at the system as a whole. Thermostat, is the fan belt slipping, right amount of coolant in the system, do you have a stock radiator or have you replaced the core or radiator with a more effective one, etc.
I've hear really good things about the Texas Kooler. Plus with cooperation from the North Texas Austin Healey Club, Moss is now reproducing these fans.
There was a post here a while back about the Texas Kooler vs flex fan. Here's the link:
https://www.britishcarforum.com/bcforum/ubbthreads.php/topics/711027/1
What helped lower my heating issue when in stop and go traffic was to replace the radiator core with a modern dimpled one and install the BCS six blade fan.
Here's a photo of the Texas Kooler and a photo of the BCS stainless fan in my car.
Cheers,
Roger