I think that you wanted a "starter chuck." I have a bunch of Supernovas, Oneway strongholds and vicmarc 120's. The latter two are very expensive and getting more expensive by the minute. The advantage of the SN chucks is that the jaws are interchangeable with almost the entire line of teknatool chucks, as well as some of the Grizzly stuff, and the smaller vicmarcs. Also you can get very cheap aftermarket adapters (woodcraft sells them for about $5.) They are quite good. Oneway strongholds and talons have proprietary jaws and are not mutually interchangeable, though each holds tenons very well. I have found though that for repeatability and very tight jaws, the vicmarcs are superb. They are exceptionally heavy and for larger bowls I prefer them (vicmarcs). One last consideration is that Oneways are made (I think still) in N. America and they have had consistently superb customer relations and technical support.
You won't really go wrong starting with any of these.
Good luck, Hilel.
No one has the right to demand aid, but everyone has a moral obligation to provide it-William Godwin