I'm looking for a good deal ...
You can wire to your stock distributor for now, and it (presumably) has a working timing curve and vac advance. Point is, it can be wired to most any distributor, so if your stock one is in good shape, use it and upgrade it to a magnetic pickup (Pertronix I) as you have funds for years of carefree service. For that matter, the stock points when used with MSD will last 10s of thousands of miles as there is no load going through the points anymore. If it's shot, then any distributor will do, and the Summit versions suggested would be fine.
Another popular good deal that needs no upgrades is using a Duraspark distributor. With it's stock magnetic pickup and your choice of small or large diameter cap to prevent crossfire. About $50 at your local parts store and wires right into MSD. Any 1974-1984 302 application will do, but pick a lighter vehicle (like a Mustang II) for a better timing curve. If you're not the type to set your own timing curves, then another advantage is to use a service like
Performance Distributors that will set one for you on their machines to match your engine combo, saving time and gaining performance and mileage.
David
Performance Distributors (and others) can set-up a DS just for you, at a cost generally less than a generic aftermarket distributor that requires tuning: