I heard a Spacedeck and Hyperspace this week and was disappointed with both. I thought they were quite gray sounding and didn't do a great job of extracting information - instruments tended to blend together and imaging was quite smeary.
That being said, I preferred it with the Ace-Space arm to the fully-modded Origin Live - more refined.
I would recommend you to definitely audition before buying (because opinions on NA tend to be quite polarised) and also listen to the Michell Gyrodec which sounds quite different to the NA tables.
However, for the same money as the Space Deck you could have a Teres model 150 which will be much less colored and will help you hear more information from your vinyl.