Steel- yes
Heavy- not particularly
Stiff- only in a good way
Diamond and truss here- I go downhill on techy stuff better than my old Pegasus , bit slower uphill but I’m slow anyways
Doesn’t beat you up unduly- right rubber helps
Very confidence inspiring due to geometry
Try one you make like it- come to Cannock and you could try every combination of jones there is on sale at the moment ( no ti diamond yet!)