We have 2 cockerpoos, due mainly to my wifes allergies.
They are a fantastic breed, with many great qualities (Very good with children, fantastic for alergy sufferers, don't shed hair).
There's also a well established breeding club for cockerpoos which acts extremely responsibly, inspecting and approving breeders and so on.
Saying that any cross breed is a mongrel and inferior sounds a little bit Nazi-ish... All "pure breeds" came about by crossing in years gone by.
Also on the question of health, many 'pure' pedigree breeds have large health problems. They have often been bred for aesthetics rather than health. Many can barely breathe, others can barely walk.
Hate the names if you really like, I'm not sure why you would though. They're a fantastic breed.
As long as you do your research, and go to an approved registered breeder (Go visit them before making any decision), you'll be able to see how the parents are, what their setup is like etc, and if they're doing things properly.
It's not offensive, just ignorant