Ric,
It seems that like many aspects of Zero Turn Mowers, the term "Commercial ZTR" is open to a variety of interpretations. Based upon what I've learned(I'll admit in the relatively short time I have researched ZTR's) a single or at best a couple of "commercial grade components" does not(in my opinion) classify that ZTR as a "Commercial". If so, there are a WHOLE LOT more Commercial ZTR's than what I have considered "fully Commercial". For instance, what if a a ZTR has a "Commercial" ZT-3100 tranny....but has a Kawasaki FR(Residential series) engine. Does the tranny make it a Commercial or does the engine make it a Residential? And some ZTR's(I don't have specific makes/models at this point) that have the ZT-3100 trannies but are specifically referred to by the manufacturer as a Residential or Homeowner series for their products. Again, if a "clearly Residential" ZTR and a "maybe Commercial" ZTR(as described in the Scag Freedom) both have 10gauge fabricated deck, why is the Freedom truly a Commercial. Personally, I don't even consider a ZTR that doesn't have a chain-hung deck as a full-Commercial, but that again isn't completely justifiable based upon a single feature/component. And just for the sake of more clarification on Kawa series designation, the Kawasaki website itself is where I got the info that FR=Residential, FS=Heavy Duty and FX=Commercial. Now in the case of designating a ZTR as "fully Commercial", which engine would you look for to make sure you were buying a completely Commercial product. The horsepower doesn't make sense to me because there are FR-Residential Kawas with larger HP ratings than my FX691V. So did you mean CC Displacement/Torque to determine a "Commercial Kawa". Don't get me wrong...I'm not simply trying to be argumentative but I do want to feel comfortable that the advice I give here, the opinions and information that I share is accurate. So convince me(using my favorite brand) that the Gravely ZT HD(with a ZT-3100 tranny, but a Kawa FR or Kohler Courage Pro engine) is a Commercial ZTR, because I have not told any users to compare it to other Commercial ZTR's, but to high-end Residential ZTR's that have some Commercial-grade components. Just to quote the Gravely catalog regarding the ZT HD: "This professional grade zero-turn is engineered from commercial DNA for the property owner who relies on high-performance and superior cutting efficiency. In fact, many of the features on these machines are the same as what professionals rely on every day". Yet Gravely doesn't have a "Commercial" decal underneath the front of this model's seat like they do for the Pro-Turns. So they do not market this ZTR as a Commercial but as a HD(Heavy Duty) Residential. I guess I need to read up a little more on the Scag Freedom Z to justify me not considering it one of the ZTR's that Scag markets as a Commercial series:0)
P.S.
You didn't mention whether you considered the base Hustler FasTrak(not the FasTrak Super Duty) with the ZT-3100 and Kawa FS as a Commercial, but I can assume since that is the same as the Scag you implied it was. Some may not agree on the Hustler.