Just popped in an APE 2 weeks ago.
So here's my advice....
The stock unit blows dead goats, but, they are cheap and easy to install.
The Ape units will last the life of the bike, are cheap, easy to install, but are hell to initially adjust.(if anyone tells you different their fucking lying to ya, or don't give a fuck if it's adj correctly , or don't have a clue what their talking about)
Up to you