BEST AFTERMARKET EXHAUST NEOS/AEROX 100?

Hi folks,
Newbie here, so hoping this post in in the right spot instead of workshop.
I need a new silencer for my 2003 Yamaha YN 100 two stroke. Genuine Yamaha costs more than my bike is worth as it's a catyliser, plus dispite giving the best All round performance, top end goes fluffy over 45 mph.
Best replacement I've used so far is the Technigas RS II. Excellent improved top end, but a bit weedy up until 35-40 mph, and if you're going uphill before reaching the power band you may as well be riding a 50cc.
So how to balance having good top end without sacrificing too much back pressure for lower speeds and acceleration?
I'm sure there is a silencer out there for me, so experience and advice from members would be brilliant.
Cheers.

 

hi m8
you seem to be the only member with a neos 100 2 stroke. i have a 50cc but a 100cc engine came up with a good price . do you know if its just plug n play on the 50cc frame ?