Trainers! We switched to trainers 100% (with occasional panties when we're feeling confident) around 6mo and haven't looked back. If I were to do it again I'd do trainers even earlier! They are SOOOO much easier IMO than any kind of wrap-up-and-fasten diaper, especially once baby is mobile and wiggly and prefers to stand heh...
We have a nice collection of Bright Bots and the aforementioned Shi-Shi Nix and Eco-Nix. The Nix are thicker and more absorbent, the Bots are trimmer and stretchier (and thus a bit easier) but get 'wetter'. We like the Bots for around the house, and the Nix for when 'out and about', like in the car seat for a longer trip as they are more waterproof.
We got some things from theecstore and also from continuum-family.com. I have a referral code at continuum-family... if you want to order from them, you can use code HD0042 -- I think you need to put it in when you register and also as a coupon code with your order -- and you'll get 10% off your first order.
You can see a picture of DD modelling the prefold belt at continuum-family
and we were testers when she was developing her tiny undies. We're committed customers.
ETA -- the only time that trainers are a pain is for a poop miss! Have the bathtub ready then because there's almost no way to get them off without getting poop all down their legs lol... Fortunately, that has happened to us exactly twice in 4 months. But if you're at a stage where you're not mostly reliable with poops, the pull-up trainers that have snaps too (theecstore has them) are a good option.