In the middle again - for the following reasons.
From a riding perspective my opinion has always been that they are a bobtastic piece of rubbish :x
The ones I rode in the the early days really put me off full suss. I hated the way the back end squirmed more side to side than it moved up and down.
I loved my Flexstem until I got rid of it and discovered how much better the bike was without it
Girvin Vectors were amazing when you braked, the front end dived to the floor then leapt back up when you release the brakes. Linked with the back end that extended under braking and moved more side to side and you have a bike that became a complete liability when manouvering slowly through rock gardens.
I hated that test bike so much I was put off full suspension for many years. Not until I tried a Mk1 Santa Cruz Heckler and a Specialised FSR did I see the benefits (I promtly ordered an Intense Uzzi SL)
As a piece of mountainbike history Proflex are way up there due to being the first readily available full suspension bikes, and the efforts of Henk Djernis :!:
Interesting as a piece of history, but not interesting enough to make them cool because they were rubbish to ride (in my opinion :twisted: ).