Quality
I thought this model was worthy of inclusion to this thread....my thoughts and reasons for my choice....
A custom hand built frame by the very much respected chas roberts.
This model was race tested by Dave Hemmings to many victories (i should know....

.....lol) this race testing and development led the frame in its final format being availiable as a custom frame build from the roberts stable alongside his other longer standing frames. (the excellent race and touring models.)
This model is shown in the Roberts team colours.
During the mid to late 80s smaller "Quality" British frame builders, had several problems with frame building design due to there tubing suppliers being slow to adapt to a rapidly changing market...the mountain bike..!!!!, (for example the supply of tubing for wishbones, lugs, reynolds etc,) and there own traditional way of building that they had been taught, ie using lugs etc. Several frame builders "back then", commented on others use of tig welding, and how there frames were almost a matter of pride, and hence the use of the beautiful fillet brazing, and how they were able to change there geometry of there frames without the restrictions of lugs. (as had been there previous problem).
During the early 90s these restrictions were being lifted by better tubing options being offered by there suppliers, enabling the frame builder to dare i say "experiment" with frame geometry, choice of tubing manufacturers/tubing mix/tubing profile, and allow the frame builder to ascertain the most effective way to achieve the best possible ride, in repect to handling and responsiveness in ride feel.
Chas Roberts frame specs and choices...including the lengths he went to with the rear wishbone.
Ultra stiff Columbus Max main frame.
Composite rear stays--
---Extra stiff 4130 horseshoe to minimize brake flex
---Silver soldered Reynolds 753 stays
---Columbus SL monostay
---Massive clearances to eliminate mud build up.
---White powdercoat base, finished in D.O.G.S.B.O.L.X team colours.
---Custom Roberts stem built individually to suit each frame.
Also worth a mention, Roberts was the first to start to use an Acronym for a name of a special custom built frame model, causing a little rivalry from other frame builders like Dave Yates and Dave Lloyd, who quickly followed with names like D.O.N.K.I.S K.N.O.B, and C.A.T W.H.I.S.K.A.S, which did indeed help to cement there popularity in mountain bike circles. then and indeed now.