Are T-slot tables necessary and is it worth paying more for steel?

Are T-slot tables necessary and is it worth paying more for steel? steel t slot table Application:Suitable for clamping multiple and individual parts on fixtures and T-slot tables ; Drawing reference: 1) Cam screw 2) Clamping element 3) Stop 4) steel t slot extrusion T-slot nuts are slid into the inverted T-slot of the table Bolts, studs, or Aluminum, anodized or Steel, nickel-plated; T-slotted fixed compression

steel t slot extrusion T-Slot Track Hold-Down Fixture All the components are made by stainless steel T-bolt thru vacuum heat-treatment Process Fit for 30 T-slot, with hex head

steel t slot track Part Number, Minimum order quantity, Volume Discount, Days to Ship, Length , Width , Height , Thread Diameter, Table Slot, Mass Available in case hardened carbon steel or stainless steel; Imperfect thread to prevent damage to machine table; Custom sizes & Tapped-thru hole available