I like the look of that Hobbywing, very affordable too! It doesn't appear to be waterproof, which kind of sucks. But the size is perfect. I am planning on running a 540 motor though, so it will have to be capable of that. In looking at the stock VXL ESC, it says there is no motor limit for it, so I'm wondering if that would be an option if paired with a 540 with a similar or lower power rating to the stock Velineon 380. Between that and the Hobbywing I'd almost rather go with the VXL ESC because it is waterproof. I love being able to hose my trucks down after a dirty run! Not to mention snow runs without a second thought.
I actually tried looking into Trinity before posting here, but can't find much available through them. They used to be the go to brand back in the brushed only days, The Speed Gems 540's were king! I also looked at Novak sensored systems, but those are very expensive! A Novak ESC with a cheaper motor might be a decent combo though, too. Another one I was looking at was Orion as I know they sell milder RTR style systems used in Kyosho trucks.
I will definitely look into the sway bars too. I ran the truck for about an hour today and noticed under hard cornering it does lean quite a bit and will easily traction roll as the wheels camber out if I'm not careful.