If you can still find the Nukeproof Horizon composite, it’s absolutely superb. Light, decent size, cheap. Not massively tough, but when you’re light and cheap you don’t have to be. But sadly discontinued and I’m sure that’s partly because nobody was buying the £80 alu ones as the plastics weren’t just cheaper but better… Bonty Line Elite looks cut from the same cloth?
(I really don’t like the Neutron/PA12 family, imo they’re just not a good shape, the axle stands too proud and robs them of grip. Stuck mine on my hybrid. Oneup composites always seem to get recommendations but I can’t understand why, really didn’t like mine, again just not much grip)