and yes, those pads are designed for trials, so will always squeal TBH. Assuming you're not using ceramic rims, try the koolstops - but IMO they're not much better than most other Maggy pads. I like the old red magura pads, but they're getting expensive.
Remeber, Maguras aren't as good as disc brakes, and TBH, not really any more powerful than decent Vs, but seem to work better all the time (especially in bad weather), and are basically maintenance free. I love them - they're on all my bikes.
And as for the Scott itself... I've always loved them, but never found one small enough for me Carbon and Maguras - what's not to love?
Re: Scott Endorphin (Help needed for Squeely Magura problem)
For afternoon tea I had a very nice slice of fruit cake. Purchased from the new Budgens that opened in the town last thursday. I'm surprised how up-market Budgens has become since I used to frequent the one in Belsize Park in the 80s.
It would be a shame to mention your bike on this post but bring it to mayhem and see if you can crack it like last year's offering.