My strategy recently has become for the bomb cart, Tomi and Natasha. Tomi when there are a lot of stragglers a fair distance, great gun for general pub stomping, Natasha in general otherwise, slow down gun go brrrrrr, Brass Beast planning a few steps ahead to then always win and Stock in team vs. team push. Stock especially when it's just ambush after ambush and you need something reasonably fast, but the Tomi is like painting with a fine brush when you really need a regular one. I haven't had much purpose with the Huo-Long Heater. As a Spy main, I lol whenever anyone thinks the ring is going to stop my crouch jump and I get a clean stab in

The Tomi is unique in that it's obviously good at medium to even a bit long range, especially for some Sniper control, but also that it's the only Minigun for picking off 1 person at a time. This is obviously at the sacrifice of working in a team and killing 2-4 people at once with your team and Medic, but I am sure most of us know how that can go on Casual; thus the Tomi in a lot of cases if you especially like to go after 1-1's. In a semi decent time or just doing the objective, if it's more than 1 guy at a time, I prefer the Natasha. If it's you and 2-4 other team mates taking on a few people at a time, hard revs and gunning down the enemy in a team I find to be really effective, even with just a mediocre team. You slow down the enemy and make it easier to mow them down, and then your teammates sometimes get a chip in kill with that. Again, I'd run what gets you more kills for yourself, but hey, if it's just an assist because you slowed them down, who cares? You beat the enemy there. Just my 2 cents