Aragorn

A high cost hero in terms of threat, but he is able to pull double duty. He can quest and then you can ready him for either defense or attack. This is important especially in solo play when you need heroes to be flexible. Pair him up with Steward of Gondor (Core) or Theodred (Core) to use his ability every turn and still have resources to play cards from your hand.

I recently had this weird idea: Build a mono non-Leadership deck, but include Aragorn. You only have two resources for the other sphere, but can use Aragorn twice every turn. Probably the Pippin in me got crazy.

The most flexible hero, he's good at everything. However, in general specialized heroes are a better choice - because you don't pay the threat cost for abilities you aren't using (this is why Eowyn is so good).

very versatile hero indeed

I realize a lot of players break out in hives at the sight of a Hero with greater than 9 Threat, but I think Aragorn is simply one of the best in the game. Yes, you pay an additional few points of Threat at the start, but in exchange you get a Hero that can get you through the first few critical turns of the game by basically doubling up. He also has very strong synergy with Steward of Gondor (Core) and Celebrian's Stone (Core). An absolutely amazing Hero all around that scales directly from early game to late game.

By far one of my favorites. From my core set, my typical solo heros tend to vary a bit, sometimes using Theodred, sometimes Dunheree, or perhaps Elenor once or twice, but I always have Aragorn and Eowyn. Eventually when FoS comes in, I will add Glorifindal to the mix, but Aragorn is a staple. The ability to ready is priceless.

One of the main reasons Leadership is my favorite sphere. Aragorn has saved my games plenty of times!

I actually never cared much for him actually. I never liked how you had to either forsake the resources or include Theodred.

Action advantage is never a bad thing, even if it costs you a resource.  Leadership is running Steward, so I don't feel you have to run Theodred to make use of it.  They also have Ranger Provisions and he can make good use of Heir of Mardil to utilize all 3 of his stats or double up on attacking, etc.  Give him some shields and put the Day's Rising on him as well.   Build-Agorn is a thing.  

I feel like this Aragorn was good right out of Core, then kind of fell off and was almost completely taken over by Loragorn after Watcher. But he's kind of quietly become really good lately. He has a sphere match to Steward of Gondor, Celebrian Stone and Sword That Was Broken as well as being a prime candidate for a lot of the Dunedain and Ranger synergy. 

Since I have hero Arwen and silver harp Aragorn is back to my deck as 'must have'. You can quest with him and have him ready pretty much every turn

I keep going back to him it seems