I know a lot has been said since then, but about the Forest Lake, Springfield Lakes question:
We used to live in Springfield Lakes and wouldnt do it again... mainly as it was too far away from anything, and the blocks of land are tiny.
I grew up in Forest Lake. Personally I love it, FH and I moved from Springfield Lakes back to Forest Lake. It is just under an hour to catch a bus from there to the city, but that will get quicker when the train line opens ( i think its due in the next six months). Forest Lake is a really nice, quite area, the lake is lovely and such a nice place to walk. The houses are on decent sized blocks of land, not huge but reasonable. It was a Delfin community so it is well designed and looked after. Its not a gated community though.
We briefly looked at building in Collingwood Park but decided against it for the cracking/undermined issue. Redbank would be ok as it is right on the train line and doesnt have the undermine issues.
I think you would be best off looking at areas that are on a train line, as the commute is easier. The buses can be a bit unpredictable with traffic (FH had some trips that took nearly double the time they should due to bad traffic)