BA APEX said:
i haven't tried an '07 rtx but i am happy with my mono with big boy spring in my '06 rtx. i leave the dial at soft and it works great for me at 218lbs.
have you tried a '06 mono? i am curious about the comparisons from those who have rode both.
I have ridden both (about 20,000 km on the monoshock in total and about 1300 km on the ProActive).
I really like the ride of the monoshock for high mileage riding, including fairly aggressive riding (with the 6.5 spring and a re-valved shock). Once its set up with a stiffer spring and a revalve it also can carry a lot of weight well.
The ProActive CK isn't nearly as smooth through smaller stutter bumps, but when the trails get rough it handles them much better. It also has more adjust-ability as far as getting ski pressure dialed in (with the monoshock, cruising ski pressure (constant speed) can't be adjusted hardly at all).
Over high miles if you ride aggressively (and low miles if you really ride hard) the monoshock skid can suffer from fatigue failures.
The design of the ProActive puts much lower stresses into the pivot arms and slide rails and the arms are probably stronger to start with than the monoshock's. I expect the ProActive will continue to prove itself as a very durable skid (with the exception to the OEM upper pivot arm bushings - mine are gone already and they are backordered).
Also the ProActive's ride is soft enough (for me) that I don't suffer any back pain or discomfort when riding. So even though the ride isn't as "Cadillac like", it's soft enough IMO. The ProActive's main shock should also be quite a bit superior at handling continuous rough trails without fading as the remote reservoir should keep it cool.
My only real complaint with the ProActive is the lack of torsion spring options (the track ratching unless the track is very tight is a little annoying also - I installed extroverts today). The monoshock has tons of different springs that can satisfy everyone from guys looking for the softest ride to aggressive riders and anyone from 100 lbs to 400 lbs. The ProActive's spring options are pretty much only ideal for 140-180 lb riders with the "heavy duty" springs giving a stiffer ride and the "light" springs giving a softer ride - but if you're much over 200 lbs you'll be riding low no matter what springs you install.