Bingo, a nicely done K Rend job with the sparkles and slightly more open texture is appealing to customers when pointed out. I get about 0.8m2 a bag at finished 15mm
Parex is a pain in the ass to get a warranty on smaller jobs, even then only 10 years. Nice and fluffy to apply obviously full of air but in my opinion a little slab like on the wall. It wouldn't be the first choice on my house if looks were the only consideration. I'm partial to the bright white though.
Weber no problem, a touch strong and it might be me, but more prone to cracks appearing? Don't get much more coverage than K Rend that I've noticed.
I do charge more to apply Silicone renders, because why not? I've only used E Grade but not worried about giving the other a squirt when the opportunity arises.
We only apply to spec, leave the rest to the cowboys and armchair scientists.