I tried a Sargent but wasn't impressed. Bought standard GS but found the back pressed on my coccyx Kahedo low was comfy but too low sold on to someone who likes low. Kahedo standard suits me fine.
I use a them, as Humbug mentioned, on my 1150... they are better than OE for sure, but as with most things, it's subjective and a 'seat of the pants' feeling...
I tried a Corbin before these but couldn't get on with it....others swear by them. I haven't tried any others.
If going for Baehr, you will need to send your seat to them and they re-upholster/recover them and add the heated element if you want it...