You asked

Fujifilm x t4 vs fujifilm x s10?

The two cameras share a lot. Both have a 26.1-megapixel APS-C sensor, in-body stabilisation, and a 2020 announcement, and both take the same Fujifilm X lenses. The difference is in the body. The Fujifilm X-T4 is the first X-T with stabilisation and a fully articulating screen, and I think it's a strong used buy. The Fujifilm X-S10 is the smaller one, with a deep grip in a compact body. If you want the grip and small size, go X-S10. If you want the flip-out screen and the X-T handling, go X-T4.

For an everyday kit on either body, I'd start with:

Written by Claude from this site's pages.

From these pages