Ive always been a fan of KTM. I had a Yamaha for a brief period and went right back to KTM. They do have a lot of downfalls though.
Ill break it down.
Pros: -Amazing Power, KTM's can be rode stock by a beginner or a pro. Itll give you the exact power you want to use weather its a slow fun ride or balls to the wall racing.
- A lot of customization to fit your needs. KTM has aftermarket parts for everything.
-Expensive. Off the showroom floor or used, KTM's hold value and your wallet will feel it initially buying one.
- Very fragile. What I mean is, bikes break right? You fix it and a couple rides later something else minor breaks, its life. What I found with KTM's is everything minor goes fast. Minor things that wont stop your ride or DNF you at race but small things that add up in value in a great way. Bearings, linkages, fork seals, exhaust pipes, levers etc.
Overall- I think its worth it. Reliable, durable (where it really matters), and do you know of a bike that looks more badass than a KTM? hahaha
I hoped this helped you a little. Keep in mind that this is just MY opinion. Not facts.