Sharuum would be a good option if you don't want to just play combo, here's why.
-The Sharuum deck has a lot of angles of attack, you're not stuck to a single plan or combo. It can function well without its general.
-While Sharuum contains combos, it can play multiple roles well, it can be both controlling or it can play the role of the aggressor.
-The deck isn't overly dependent on any one card. There are cards you want more than others, and you'll usually have a way to get them, but even without tutors, chances are you'll be able to have relevant means of interaction most times in the game.
-You've got ways to interact with both combo decks and creature based strategies, this is huge.
That's not to say the deck has no weaknesses.
-The deck is color hungry, and mana denial plans can be very effective against it.
-Recurrable graveyard hate is potentially really bad for you, but it's something you can play around.
-Artifact hate can be really bad for this deck, although honestly, it needs to be pretty high density to really hurt the deck's power. You can protect your artifacts pretty well thanks to things like Hanna's Custody
and Guardian Beast
, as well as good old countermagic
I'd choose Sharuum over other tier-1 commanders because
-Sharuum can actually function quite well without Sharuum, whereas Arcum and Zur's decks can usually be really crippled if you don't have a way to recover Zur or Arcum quickly.
-It's not a deck that needs a really linear, uninterrupted line of play like Azusa, Azusa can be very powerful, and really overwhelm a table, but overextending into a Rout
for example can kill the deck. you'll be hard pressed to resolve Crucible most of the time, as most people are aware of what follows if it does resolve.
All in all, I think either Azami or Sharuum would be my choices if I was looking just to win.
In short, I'd take Sharuum because it has good plans against a variety of powerful and relevant strategies, and is fairly resilient to hate.