Do you want to share a single ukulele with your kids? Or, do you want to purchase one for each of you? There are 4 sizes to choose from. Smallest is Soprano, Concert, Tenor, and largest is Baritone. If sharing the instrument, I'd suggest purchasing a Populele 2 smart ukulele as a first instrument. It connects to a musician's phone via bluetooth and has an illuminated fret board capable of depicting finger placements that create chords. The app has a bunch of tutorials, games, songs, etc. It's another tool for learning ukulele that kids seem to "click" with. Baz, mentioned previously, has a full review of this instrument. The most surprising thing about it for me was that the sound wasn't plasticky as expected. But, not wood either. It has its own sound in a very good way. If I were getting one uke for each kid and myself I'd probably get a couple decent plastic ukes like Donner DCF-100 or an Enya Nova for the kids and a solid top wood tenor for the adult guitar player. Plastic "carbon fiber" ukuleles are much better than when I wore younger shoes. I also transitioned from guitar a couple of years ago. Love guitar. Ukulele is the vibe I prefer.