Well I have to separate this into 2 categories.
When talking about Battletech, before any of the Clan stuff came out, I'd have to go with the Thunderbolt. Back in the old school TT days, this mech had the firepower, heat sinks, armor and maneuverability to get the job done and it took a licken and kept on ticking!
When we get to actual PC games and talk about MechWarrior games, then my choice shifts to the Madcat Mark 2. You just cant beat this mech for firepower and maneuverability. Plus, it just looks damn cool.
Edited by SilentWolff, 08 January 2012 - 10:44 AM.