Gyrodec vs Well Tempered Amadeus

I presently own a MKII version of the Gyrodec bought as a demo unit in 1990 with RB300 tonearm upgraded with Techno Weight. The only mods to the Gyrodec are new two piece towers, nylon spacers for arm board and black tak under the skeleton. I use a Blackbird cartridge.

My question is, would a WT Amadeus sound better than what I already have using the same cartridge. Or would i be better off fully upgrading the Gyrodec with new DC motor, plater bearing and Graham 2.2 tonearm?

Upgrade cost about $1500 plus about $1500 for used Graham arm. So about same price as a new WT Amadeus.

Thanks.