I have a 14yo, age 3-5 was infinitely worse! I also have a 4 and 1.5 year old. My teenager is quite nice and reasonable
I hope it's the gentle parenting I did when he was little. There's still time for it all to blow up in my face I suppose! BUT, I can have a conversation with him and know that we can actually get somewhere with it, refer back to it later, we have shared interests (TV etc). The younger two are still completely in the random shit mode where everything they say is adorable, hilarious, and performs a very basic function of communication but it's soooo basic, no matter how articulate they sound, they will forget instructions as soon as they walk out of a room, you ask them to deliver a message and it sounds like it's been through seven Chinese whispers, they don't understand stuff in the way you intend it, it's just a very rough tool at this age and that can be frustrating (I think I am very verbal/language orientated).
Yeah the 4yo is still the hardest of the 3 of them right now. He is very cute and funny but also infuriating. However the 1yo does not sleep. EVER. And this is becoming old (and I know it doesn't end for at least another year yet <sob>)
However shopping for clothes for the teenager is depressing. £££££ and not my taste. Whereas shopping for little ones is a lot of fun.
I think really there are upsides and downsides to every age, but my nemesis is definitely the part where they realise you can't actually physically make them do stuff, but they don't have any sense yet to make sensible decisions, so you end up dealing with the infuriating consequences of those decisions because they can't handle it by themselves. Come to think of it, that is what people say is hard about teens. Maybe I let the reins loose a bit too young.