Yes, I totally understand about the curiosity. We're relative newbies to all this, so we haven't really had a lot of time to experiment.
But from what we've done so far (1A-2B), I doubt we will go with anything but Singapore for the exact reason you name: it's working too well for us to switch. It's meeting DS6's needs and is easy for me to use. It's cheap, it's good, and it's laid out in a sensible fashion. I can't imagine going with anything else, barring some unforeseen problem with the curriculum somewhere down the road.
And I think you're the one who suggested it to me, Lorel. So I have you to thank!
