Good evening, Rusty!
Yes, indeed, I think the Collins is great value, not only in content but also in cost.
I paid around £5 for a volume that originally cost £30.
I, too, found the crossword relatively straightforward today.
Yes, 3d: "siblings", is a wonderful clue!
I have answers for all the clues, so have completed the grid.
But there are three that I cannot fully parse?
27a: Vocalist's slangy greeting to famous countertenor (8)
Answer: "yodeller" = "vocalist" (def)
but why?
16d: They choose English readers in foreign universities (8)
Answer: "electors" = "they choose" (def)
19d: Stretch limo originally acceptable in key northern street (8)
"elongated" = "stretch" (def)
What am I not seeing here, please?