hyperdht is smaller and additional benefits
1. used by keet and pear runtime
2. protects against eclipse attack
3. has best in industry holepunching built in

pear runtime as dat started out with bittorrent mainline dht too, but moved on because of issues related to holepunching and eclipse attacks that cant be fixed in bittorrent mainline, because it wpuld be a breaking change and bittorrent mainline is too widely distributed.

the scale of mainline is much less helpful when it cokes to eclipse attacks and smaller size is sometimes as secure because of the additional sybil eclipse attack protection.

anyway - would recommend to talk to the pear runtime team at holepunch.

hyperdht is the most advanced and modern dht i am aware of and would definitely recommend 🙂