Changing Tyre profile doesn't just change comfort and stability.. it changes the whole dynamics...It affects car height. ground clearance; drag force, braking dynamics, Tyre sensors, etc etc (Engineer hazrats ziada behtar comment kar saktay hai)
Your ECU, ABS,VSC all are are programmed for this particular setup and all the car testing has been performed on this particular setup.
So unless you can get a better Tyre in the exact same profile as stock; I wouldn't advise changing it as it will not just affect comfort ... it will affect everything ... ABS, TC, VSC etc..
Rest ... Its your personal choice... whenever you are moving away from stock settings... you might gain a certain thing but you get it at an expense of losing some. 