just wanted to get some opinion considering a card choice. It's just one measly slot in my deck, so the impact isn't huge, really. That's partially why I don't just test, to be honest. Winning or losing might not always be very clearly a result of picking one over the other.
The cards in question are, as the title says, Cairne Bloodhoof (who's currently in) and Argent Commander, the potential replacement.
To give some perspective, here's my current list:
2 Earth Shock
2 Lightning Bolt
2 Argent Squire
1 Stormforged Axe
1 Bloodmage Thalnos
2 Flametongue Totem
2 Feral Spirit
1 Lightning Storm
2 Harvest Golem
2 Onbound Elemental
2 Chillwind Yeti
2 Azure Dreck
1 Cairne Bloodhoof / Argent Commander
2 Fire Elemental
1 Ragnaros the Firelord
It's pretty much a standard list, if a bit focused on board pressence and mid-game aggression (thus, no Mana Tide Totems and only one Lightning Storm). As much as I like Cairne, he's the only card that costs 5 or more that doesn't impact the game immediately. Whether it's an immediate attack with the Dommhammer, the card and spellpower from Azure Drake, the direct damage from Fire Elemental or the firery purging Rag loves to do so much.
Argent Commander would go much better with that theme than Cairne. Now, if both stick around a bit, Cairne seems better for sure, but getting some immediate benefit seems nice as well. I'm actually thinking about running two Commanders (which I haven't been doing in any deck ever since they got nerfed). I'd probably drop Cairne and a Harvest Golem or an Unbound Elemental, in that case. Tough call.
Oh, and yeah, I'm not running Al'Akir. I tested him a while ago and never found him to be that great of a finisher. A suberp hard hitter if you've got your Rockbiter up, but not that great otherwise. And easier to shut down, thanks to silence, in my opinion.