well if your happy and comfortable on the 200x, you should be comfortable on an 85 t3. as for the power, the 85 t3 does have an unpredictable powerband that does take some getting used to. they have quite a punch tto them. and yeah that is a good comparison!
1985 KXT 250 Tecate - kx cylinder, kx ignition, bassani headpipe, answer silencer, v-force reeds, 38mm airstyker carb, +2 franks swinger, raptor rear shock.
1996 YSF240 Blaster - maxxed out!!!
Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting "HOLY SH-T, what a ride!"