I've got used to the position of the RT188 shifter. If the RT198 is in the same position it'll hit your leg when pushed WOT. A hotfoot would solve that, but I don't need one in a 45-50 mph boat.
At 6' 275 I don't need a tilt wheel in the RT...there is LOTS of room under the console! The PII also has a nice big cockpit area compared to the Sabre. I had to get a tilt wheel on the Sabre, didn't need it in a PII.