I got all the Atlantic ones on vinyl cheaply but haven't gone any further.  I'm just not a huge Mann listener.  Haven't listened to them recently but if memory serves, Sharrock stays pretty much in the background on a lot of the Atlantic Mann discs.  I've made a habit of getting as many things as I can with Sharrock.  I generally love his sound, and the only ones I have that are painful to listen to are Live in New York and Highlife, mainly because of the keyboards.   
 
I love Linda Sharrock, too, although I haven't heard anything she's done in years.