i have personaly handled over a dozen various protech knives that mike payne has had on his tables at shows and at the kitchen table at his house....most recently (12/18/00) i was able to handle the new grooved/ribbed versions of the trIII and was once again quite impressed....these knives are about as well made as the microtechs, have strong springs, are nicely finished, and have good lock up...blades are well ground and grinds are even...blades are 154cm...overall they are an excellent buy for the money and are a helluva lot nicer than any benchmade auto i have ever seen...they are priced fairly and give a great value for you hard earned money...the ribbed/grooved ones sorta reminded me of the old ludt's microtech used to make but of course these are not ludt copies or microtechs...just my .02 cents worth...feverdoc