Lyra Delos or Soundsmith Boheme for Space deck/arm

If it were me and if they were within your budget I would recommend either the Ortofon Cadenza Bronze or Black, depending if you wanted more warmth and liquidity or detail. Both of these cartridges mate very, very well with the Fletcher/Nottingham tonearms, including the new Pear Audio Blue Cornet arms.

I haven't tried a Lyra cartridge with a Nott tonearm but it should work fine. So should the Boheme. Personally I think the Soundsmith cartridges are a little expensive for what they are, but that's just me.

Br3098,thank you. I read a number of reviews. People put just about everything in Spacearm and usually say that it works fine. This tells me only one thing - that Spacearm is a pretty good and versatile tonearm.
There are those who like Ortofons and Dynavectors and those who don't, especially lower level ones. Cartridge around $1500 is still considered inexpensive by audiophile standards. It is hard to try many cartridges without losing a lot, unless perhaps you get used for a good price and then sell what you don't like.
It appears that overall Lyra cartridges are among favourites, also Delos is not heavy. As for MM, I do think about Soundsmith and maybe Nagaoka 500. Without really knowing for some reason I guess that I would prefer Lyra for its dynamics and speed, though those MM might give me somewhat better midrange and overall coherence. This is just might. Many people still prefer MM, there must be a good reason.
Some might say that if I go with Lyra, the Acoustech phono will be a little inadequate. Perhaps, but I cannot upgrade both at the same time. Besides, when I do upgrade I prefer to jump. This means that I would be looking at $3k new phono, the Acoustech was $1.2k.

+1 on the Bronze.

I like coherent, balanced and dynamic sound. PRAT is very important, bass and soundstage too. I can sacrifice some resolution and imaging sharpness. Prefer warm side of the neutral, not too warm.

That describes the cart to a tee. Quick, pure, dynamic, colorful and very slightly on the warm side.