League of Legends (LoL) Question: Who should I buy?

It all depends on your style. If you like to play more as GP, you should buy Illaloi but if champs like Garen suits you better, you will have more fun playing as Tryndamere. Anyway I think that Kled is one of best top laners. His skills are easy to understand and Bonus HP from Skaarl make you a tank with a lot of damage. Also It's always hilarious when you have 50 HP left but you hitted enemy x times so Skaarl comes back and you are the one with the kill, instead of the enemy.

Hm... Cant help you much cause i dislake both of those champs (but my opinion is taht Iloi is more fun)
- But i can tell u one of my favourite toplaners - Fiora
- she ain 6300, she is efective at all points of the game, can provide a huge heal for your team,
AND the MOSt important part is that she is really fun to play!
Hope I helped you :)

For a newer player, I can't recommend Garen, Nasus, and Annie enough. They're all very simple to learn and play, and each teaches you something different about the game. Garen teaches you more about trading in lane and engaging/teamfighting, Nasus helps you improve your farming skills, and Annie helps you learn how to properly conserve mana, poke in lane, and use your stuns and other CC effectively in fights. If you're feeling a bit brave, Draven is a great way to teach yourself better positioning and movement, but he's fairly difficult to do well with.

Honestly, whatever you're having fun with is what I would stick with, because you'll do better if you're having fun.

Not bad at all

The obvious answer is to pick whichever you you have more fun playing. For me, that is Illaoi, any day of the week.

Her kit is incredibly fun for me - way moreso than Tryndamere's.

If they are equally fun for you, then let's look at what the two champions do throughout the game:

They both have strong early laning phase and are able to get kills pre-6.
They both get a BIG power spike at level 6.
When it comes to the late game, Illaoi should usually be working with her team as a front line tank or bruiser, and does very well in big team fights.
When it comes to the late game, Tryndamere usually requires somebody else as a tank for your team, and is a big damage dealer - many high-ranked Tryndamere players prefer to spend their time creating pressure on the enemy base by split pushing the side lanes, allowing them to flank during teamfights, and allowing their teammates to secure objectives.

If you fall behind early game, Illaoi can still make herself useful by creating picks with her E,
Test of Spirit. If Tryndamere falls behind early, you'll need to play with discipline to keep the gap from spreading.

They're both easy to learn, but difficult to master champions. I prefer Illaoi.