VM120 and it isn't even worth debating. Best chuck made and best selection of jaws. I am a satisfied owner of a 2436 and have used many other Oneway products for 25 years and have more Talons and Strongholds than VM chucks, but that was my mistake because the VM chucks are the better investment path. As compared with the Stronghold, the VM120 is heavier, has a smoother scroll action, and has less play in the jaws. The more significant differences are the chuck key and available jaw selection. The VM120 accepts a 10mm hex key, so you can use the standard L-shaped hex key that you already own to mount the chuck deep inside a rough bowl where the Oneway chuck key would be unusable. Where Oneway really stumbles is in the lack of jaw size options, lack of shark jaws, and lack of big steel dovetail jaws. Oneway tower jaws are ok, but not as versatile as shark jaws and not available in as many sizes. Availability of jaws sizes is important if you are interested in perfect circle mounting. For big work, the biggest Oneway jaws are considerably smaller than the biggest VM jaws, made of aluminum rather than steel, and only availabe as serrated. Serrated jaws are inferior to even profiled and create endless mounting headaches. The only drawback of the VMs other than price is that they do not thread onto the 2436 spindle (at least on my machine) as smoothly as the Oneway chucks. Maybe M33x3.5 is different in Australia than Canada. The one plus for Oneway is that the profiled jaws are more versatile if you can only afford a couple of jaw sets. I was once where you are, I went down the Oneway chuck path, and I have some regretzkys. Nothing is better than the 2436 though.
