Bob:
Do you have a budget in mind. If you want to go with the low end you can get a CDI unit. If you want a higher end unit that you can probably install yourself, you may want to look at the SpinTec unit. I think that they are sold on this site. Zero maintenance & a lifetime warranty.
There are a lot of other choices out their but you may need a professional installer.
Harken, Shaffer, Pro Furl etc.