I personally like Tokamak - I can't say whether it's quicker or slower than the others, having only used ODE ages ago when I made that original wrapper, which was I suspect very slow compared to current systems, but Tokamak seems to me to be much more stable - I've never once managed to break the Tokamak simulation, but with ODE I managed it frequently. Again up-to-date ODE systems may well be much more stable.
Also, as I've said before (many times) Tokamak also has a really nice friction system that works well for car wheels, whereas ODE does not. I know people dispute this point but I've yet to see an ODE driving sim or demo that matches what I've managed easily(ish) in Tokamak in SRX.
Judging only from the demos Newton appears to suffer the same grip-spin problems as ODE when simulating a vehicle.
Stevie G's vertlet stuff is amazing, esp. with hundreds of little vehicles whizzing around.
Also, as I've said before (many times) Tokamak also has a really nice friction system that works well for car wheels, whereas ODE does not. I know people dispute this point but I've yet to see an ODE driving sim or demo that matches what I've managed easily(ish) in Tokamak in SRX.
Judging only from the demos Newton appears to suffer the same grip-spin problems as ODE when simulating a vehicle.
Stevie G's vertlet stuff is amazing, esp. with hundreds of little vehicles whizzing around.