I have a 14-inch Powermatic Bandsaw--I have a riser block but NOT installed, yet. My question is how much better are the newer steel saw frame bandsaws than these older style ones? i am particulary interested in the Grizzly GO513X2. This one is the 513 platform with cast-iron wheels. They call it the "Extreme" Series, Taiwan made. Any insight or input of comparisons would be appreciated. Thanks Lewis