We have used the Autel scan tools for several years now. They have a full line, are available on Ebag and Amazon, have free updates, and start at about $20. Of course you can spend $1,500+ for one if you want to...................

Lots of choices, depending on how much you want to do. I would recommend one that would be able to do OBDII and ABS. A TPMS scan tool is handy now a days, too.