I believe the 10 does not work with newer cameras (i.e. 501CM) as the camera lens release button gets in the way of the tube release button or something like that, i.e. can't mount it properly. The rest should all work just fine. I have the 8/21/55 tubes (the old ones, not the newer E ones) for my 501CM and they are great, the 21 is my most used, the 55 comes second and the 8 last. I thought about a 16 too but the 21 is just as good.
The 8 only makes sense with the 80mm or shorter lenses. If you have a 150mm lens the 8mm tube hardly makes a difference (I have 50/80/150/250).
If you have never used tubes before make sure you put them on/off in the right order: put the tube on the camera first, then another tube (if you want to), then the lens. Then take the lens off, then a tube, then the last tube. Do not take the lens off with a tube on it as you can jam it.
I've also tried stacking 3 tubes but that does cause misfires/jams every now and then as the mechanics get a bit too sloppy (especially if the tubes are old/worn). So far, whenever I had this happen I just fired the shutter again and eventually it all evened out but I'm not going to be trying it much anyway.