The fire lance is good for two mech VS two mech games.
Awesomes are awesome. They're the most irritating thing to kill in 3025, and have a damage output that is both high and steady. There are excellent upgrades too.
Charger has decent variants. Even the base unit isn't totally useless in 3025; it's decently tough, and people tend to ignore it until it's in position for that 16 point kick. Use it as a 1A9 or 1A5 and it becomes scarier in the extreme.
Firestarter doesn't come into its own until you start throwing around the fire/smoke rules, or running into infantry. If you used the enhanced flamer rules it can be decent even before then. It's also a good proxy for the firestarter omnimech, and the prime of that is a solid medium.
Vindicator is something you won't regret having two of. They're rock solid troopers with good later era variants. The worst thing I can say about them is that the base model has a weird bias towards rear armor, but even that means they can be moved earlier in the movement phase without fearing backstabs.