Just found another excellent big plane in my collection, a drivable Boeing 727. Nicely shaped nose and good detail on that one
Regarding speeds, I've often found it necessary to actually add "mass" to the plane in the config file. Oddly enough, this actually increases the speed. There used to be lots of threads explaining this, but they are all gone now. I have also found I get better performance from aircraft if I control them with the Autopilot command rather than an AI driver. No idea why. And don't forget to add invisible speedboards to the track to make them accelerate on take off, slow down after landing and for taxi-ing on the runways.
Nothing can be done about the track sound, as far as I'm aware, it's a property of the track, not the planes.