For home, I mostly drink plain water (sometimes just from the tap, but I have a Brita jug) or store-bought seltzer. At the bridge club, they have a big soda contraption that puts out Coke, Diet Coke, ginger ale, seltzer, and probably a couple more flavors - I guess it's like a SodaStream, but commercial size. I drink the seltzer out of that. It tastes fine to me.
I toyed with the idea of buying a SodaStream a few years ago. Without doing any real cost-benefit analysis, I decided we didn't drink enough fizzy stuff that it could possibly be worthwhile. I could be wrong, but it felt like one more gadget that might be a good idea in theory but would just clutter up the place in practice.