Do some research man! Even on Basschat you will find lots of information.
TKS are a Swedish company who make (as far as I am aware) only bass cabs. The build quality and sound are excellent and TKS have won many converts over here in the UK as well as mainland Europe.
By the way, I have never heard anyone else refer to TKS's offerings as "ugly" 😲😀 Are you sure you're not judging the quality of my (terrible) photography? 😂
Joking aside - do yourself a favour and try a TKS cab. If you don't like them, fine - but don't discount them!
On a separate note, a sensitive 8 ohm cab may well sound 'louder' with the same amp than a less sensitive 4 (or 5.33) ohm cab. The whole Watts/ohms/loudness thing is pretty complicated...
Meanwhile - my ugly cab offers lightness, tone, volume, sensitivity and responsiveness. But feel free to judge with your eyes 😃
Sorry, that turned into a bit of a rant didn't it? 😁