I'm thinking of building a long-lasting, portable gaming desktop that I can carry around the house (daily) and also to my friends' houses (monthly) that can also occasionally double as a high-load workstation for many hours. The plan is to fill it with something like Ryzen 7 3700x, 2060Super, 32GB RAM and a couple of M.2 drives.
I'd like a case that I can actually purchase in Canada (Toronto) today and hopefully also have an option to return it if it ends up not fitting my needs (I think that narrows it down to what's available on Amazon.ca, Newegg or Canadacomputers). Ideally the case would have a handle or be moddable to add one. I also would like to have a case with very good air flow yet reasonably dust-filtered since sometimes I want to run it with 100% CPU and GPU load for over 24 hours for video/3d rendering tasks and photogrammetry (I was thinking of covering this with air filters https://www.amazon.ca/dp/B001G17P8W but no )
Ideally the budget is under $2000 (hopefully around $1800) CAD before taxes including a new keyboard, mouse and a 27" 1440p 144hz monitor and just one 1TB M.2 drive. I do plan to lug the 24" monitor to my friend's house sometimes, but most of the time it'll be hooked up to a 4k 60hz TV there.
I was thinking of adding a strap-a-handle to a Q300L, but that would make it impossible to open the side panels and based on this video (https://www.youtube.com/watch?v=oCQgp7T9eus) the airflow is actually quite bad.