I finally got myself an Artisan KA, used but still new to me. Anyway I was looking at those scraper blades and see there are a few different brands. Searching on here seems all the posts are old (2009 & 2010) and nothing really seems to compare the brands.
I like the Beater Blade and also have two. Their customer service is very good as well.
Beater Blade for me too. I returned the KA.