Hi Terry,
I can have a look at a few of those parks over the next couple of weeks if you like.
Ascot is the closest to Perth CBD and most central. Traffic can be nasty at peak hour, but close to some major roads and the airport so going in any direction is fairly easy. I drive past it quite a bit.
Banksia/Hazelmere is on the eastern edge - a bit industrial, but close to the hills. Not sure what is close in the way of shopping, food etc though. We go close to it quite regularly, so will take more notice next time.
I didn't know about the Queens Park one.
It looks to be in the middle of Welshpool, which is the major industrial/transport hub of Perth. Fairly central, but I doubt there'd be much around it apart from truck stops and freight yards..... During the day traffic is shocking.
Karrinyup is about 10 minutes from our place in Perth, so can easily look at that one. It's really not far north (as far as Perth goes), and should be a more relaxed suburban feel. It may be a bit extra driving though depending on where you plan on going, being quite westerly (but only 5 mins from the beach).
Coogee used to be the ass end of the world, and right next to the live sheep export jetty and abattoir! I think it has improved a lot since then, and quite popular for school camps etc. It is a bit south, but not bad for Freo and anyone heading to the Southwest. If I get time I will have a look - but last time I drove past it was very unimpressive.
Cheers, MD.