Well I decided on the Dixon Ram Ultra 61". It's a new 2013 model that I am getting for $4500 out the door. It seems to be almost exactly the same as the former Husky mz6128 except for engine. Positives: price, 3400 Hydros, bigger tires than the mz or bad boy zt. Negatives: courage engine, aluminum spindles, not a commonly owned brand. It looks like cast iron spindles are a direct replacement, though. I see several on eBay for decent prices.