Is my setup mid-fi or hi-fi?

That's actually a really nice system. I used to own the Halo combo you do, and have heard the Totems before at a local dealer. The Halos were the first "high-end" components I ever owned. They replaced my Kenwood receiver which I accidentally blew up (literally - long story...). Anyway, based on my experience that gear is surely a step up from average, and should give you a good amount of what the ultra expensive stuff does. The way way audio gear is priced these days, you often have to pay a lot to get the extra resolution. Ultimately it depends on your budget and what's important to you. In the meantime, I would enjoy that system and buy some software.

Slov_dream, I agree with your assessment of the A21 - I drove Dynaudio 52's with mine, and those are 85 db sensitive, with a nominal 4 Ohm impedance. You should be fine.