Ho-Oh and Reshiram are the strongest Fire-Types excluding the Fire Arceus. Who would be better, and what are your thoughts of them?
Since I haven't had experience using Ho-Oh, I'd say Reshiram.
I love Reshiram's design, and it has really strong Fire-type attacks like Blue Flare and Fusion Flare. It can be very handy against many post-game Trainers and its typing is unresisted a lot thanks to Turboblaze (a pseudo-Mold Breaker). Reshiram quickly became one of my faves, which made me choose Black over White.