I come from the modeling age of the mid to late 70's, eventually moving up to IPMS and AMPS national judging. I'm in a unique position with model judging since I build armor and yet had a 22 year military career encompassing almost 16 years of flight in the Air Force, but in no way the final word or the infinite expert. I've had numerous opportunities/missions to carry, and drive, armor vehicles (since no one on the crew usually knew how too if we had flown in to austure locations). I've driven BMP's, a T55 or two, T62's, M48's, AML 90's and numerous other Jeep/Land-Range Rover like vehicles over the years.
Bring all this into the modeling world subject matter of when is too much or too little when it comes to armor paint/weathering, etc., I can tell you from the course of time over a 40 year modeling 'career' there has been little movement from what I call the "Verlinden clean dirty". Its the nasty little phenom of armor modeling that somehow has paint/weathering that defies the use and damage of real military vehicles with photographic evidence to the contrary of what seems a less travelled chipped/worn look on the the model that tries to represent the real vehicle, Somehow this consistantly will win a modeling contest to my dismay and bewilderment.
When I judge, I come to accept this 'norm' and try and find the balance between the common sense approach of how a vehicle truely looks in real life compared to the 'clean dirty' usually found on armor models. Its subjective in nature of course but to balance between the two is what I usually go for. My input and constructive criticism to the modeler has never failed me and no words of anger has ever been exchanged (at least to my face) LOL
Yes, the "Tank Art" books (et al) are wonderful, but also subjective. While the arthur of alot of these modeling 'handbooks', IMHO, goes to the other end of the spectrum from Verlinden (and very 'attractive' I might add), there is that question of how true is the representation of any one of his vehicles featured?? To me the final answer is again: subjective. If there is any one author, IHMO, that has tons of time around the real deal, and models to that affect/end, it's Zaloga (et al). And let me make this clear...I endorse no one modeler or author.
Know deep down that the rusting hulk you want to portray truely may not be accurate and overdone if the vehcile is still operational, or, if found in a tank graveyard, not ENOUGH rust could be an issue. Those chips you may have placed on your Abrahms may be way overdone and excessive (crews of active vehicles and aircraft to the most part maintain them to impecable condition, I know I did)! Balance your vehicle as much as you can...combine multiple techniques. Always know when to say when...
Go to contest! Do your research!
Get your hands on the real deal photo of the vehicle(s) you wish to replicate. There is no excuse today for lack of reference photos...the web gives you endless choices. Count the number of photos on the not-modeled-that-often-boring-piece, the M47! Just that vehicle alone numbers into the thousands when it comes to photos!
What is my answer to that balance I seek in judging and my own personal builds? Build how you feel and feel your build.
In the end...go out and model my friends!