Usually in larger games, especially ones where there are less regulars on my team, I have no say in what upgrades to get and they mass weapons. They won't even listen to me when I say "Get the radio", in order to get rocket pistols, but they freak like "OMG ur such a nub shut up your face already radioz suk".
In smaller games, 1v1 or 2v2 that I've been in a few times, I like to go Armor, Armor, Shotgun, then other upgrades. I try to get leg implants and the super jump as soon as I can, but I also focus on some of the important things like coffee strength and advanced cloning (which nobody will ever get, even when I try to explaini its benefits).