Perlon is my strap of choice for summer. Everyone knows eulits are great but the colour selection is so limited. I've tried some other "perlons" (using quotes because I'm sceptical that anything other than eulit is actual perlon rather than nylon) but have found them all underwhelming:
-cheapest nato straps: utter garbage which is where it ended up within 10 minutes of arrival
-miltat: I got a couple of these for my 22mm watches and they are pretty terrible
-semper straps: again, better colour choices but low quality
This year I decided to pick up a couple of c&b's perlons to try and I'm pretty impressed so far. I really like the colours and the quality is outstanding. The only thing I would complain about vs. eulit is the buckle. It's quite sturdy but a little bulky vs. eulit. But otherwise, great straps!
Here are some photos of the one I got for my dagaz thunderbolt. I got another for my mww rattler and will try to post more pics when I do that strap swap in a couple weeks. Oh and here's the link to the c&b page: