I like Anarchy. It allows things to happen much faster, I think, but I just got back into Shadowrun this year. I just ran a oneshot with new players and 6 on 5 combat took less than 30 minutes, miniatures and everything. I think the combat rules section in Shadowrun 2nd edition might be longer than the entire Anarchy mechanical ruleset (apart from the list and pregens and such).
On the other hand I'm in the process of recrunchifying parts of it. I'm converting 2nd edition cyberware and spells (I like the 2050s) and making master lists of stuff . Also going to liberalize all the amp limitations, and am working on a karma based build system which I need to play balance better (195 karma point Physical adept is starting off with 18 dice in unarmed combats and has killing hands that start off at 7P damage when most people have like 12P total health- one shot, one kill, maybe even through armor) with the goal of not having any attribute, skill or amp limits, just take the chunk of karma and build what you want. We'll be adding back rudimentary drain as well.