Well, the Tyrant needs Wings, twin Brain Leeches, and a Thorax hive...it will be your big hitter. If you're handy, go ahead and magnetize so you can keep your options open.
Warriors currently work best as a vanilla x3 Brood, with a Cannon...that currently runs 100, that gives you a generally durable Synapse source, and it'll continue to be handy for Formation as you build.
Gaunts generally do best with no upgrades, and if you have Rippers, they can be supprisingly useful.