Are the only differences between a 5000 and 5000 Plus rotor the green colored cap and the ind. head shut-off feature? And what about those MPR nozzles.. Anyone using them? Why do they only come in Q, T, H and F? So why not a 240 (TT) or 270 (TQ)? Anyway, I used the rain curtain nozzles yesterday and got pretty good coverage with some adjustment screw tweaking... curvy edged lawn on a fairly steep slope... part shade/ part sun. Used PRS 5000 Plus heads to replace old PGPs. I used #4 nozzles throughout because the smaller arc areas (105 to 130 deg. mas o menos) also were in more sun. Seemed to get both some good overlap and close in watering too.