Thinking about taking the plunge, have never ridden trials only Enduro and MX. 
A nasty injury has made a trials bike appealing due to weight and less stress on my arms. I snapped my humerus in two early April (MX) and has surgery eight weeks ago. 
I should be able to start riding in August and a light weight bike that is less powerful than my SXf 250 is appealing.  I want to use it more like a MTB with an engine though than rock hopping and to get onto single tracks in forrests. 
So, noise pollution is a consideration - compared to my SXF, how quiet is the Ossa? 
The Ossa appeals as it has EFI and I am not a bike tweaker, want to drop the oil and ride it without dicking around with carbs. 
So, what is the Ossa like in terms of reliability and how quiet? 
Thanks