I keep Typhosion within my party constantly in HG, even though I usually keep my Alakazam or Metagross in the first slot. However, in Pearl, I don't always keep my Infernape with me, as it is a lower level than the rest of my team (only level 70). I do keep my Blaziken with me though, as he is a nice level 98, and I'm kind of fond of him, as I've had him since my Emerald version.