Don't remember the 200 over here but the first xr250rs were an unreliable bag of spanners blowing up the top ends which was a shock after the unbreakable XLs.
They did get them sorted.
Same mod used for the TDM900s, made no difference starting but did help some with the low rev stutter.
As for noise I can't remember and now I have the top of the box removed on mine and loving the induction noise.