One important part of the frequent gigger's arsenal is a backup.

If the S900 will do the job, then you've saved enough money (as opposed to buying a Tyros2)to buy a spare.

A broken key or switch, whatever the cause, is not something that would be fixed right away(unless you have the parts and ability to DIY)and could very likely be a loss of gigs.

Most busy performers may be able to swing the price of two S900's but I do believe that two Tyros (Tyrii ?)would be beyond a reasonable budget for gear.

Regarding the Tyros2's action (terrific BTW) as opposed to the S900's...it's a matter of adjustment IMO....although the T2's keyboard is really nice for piano stuff.

If Zuki doesn't need a backup...then it's gonna be a T2 for the man...deluxe all the way.

Good luck on your quest, Zuki.

Ian