  We use the quasilocal formalism of Brown and York, supplemented with
counterterms, to investigate the thermodynamics of asymptotically flat black
holes. We consider two families of exact regular black hole solutions, which
are thermodynamically stable. The first one consists of four-dimensional static
charged hairy black holes in extended supergravity. The second family consists
of five-dimensional static charged black holes in Gauss-Bonnet (GB) gravity.
Despite the fact that their characteristics are completely different, we found
a striking similarity between their thermodynamic behaviour.
