I'm using the fiat flywheel with the 3.2gta clutch and at low revs,under 1400rpm,in fourth or fifth,IF you try and accelerate hard,especially up an incline,it will vibrate,slightly(much less than the old tired dmf did!).if you are gentle with the accelerator it is fine,when the revs increase you can boot it with no problems at all.Generally in 30mph zones I use 3rd gear,but virtually no throttle to maintain speed.I could,and sometimes do,use 4th,but usually after a 30 there is a sixty and its nice to get to sixty quick
My bella is not remapped(yet)and since changing the clutch/flywheel I have not made the clutch slip at all even when pushing on.I did treat the clutch gently for the first 200miles,tho.
imho,Either way you look at it a good smf and clutch is way better than a §hagged dmf.
If I hadn't already bought a flywheel I would have used the autolusso conversion myself.
It really depends what sort of driver you are,if you don't like changing gear when you slow down,get a new dmf,if you don't mind changing down occasionally smf is fine!I wouldn't go back to the dmf because I don't like the way it makes driving feel very refined,but slightly 'detached'.but I much prefer the feel of the smf,even with the slight change of driving style required.
I have done about a thousand miles,now, and have no regrets about the conversion.