Where to go next with the turntable

@OP, the Linn LP12 epitomises bass warmth - but you've had a couple of those. Given that and the fact that you've had VPIs, take a listen to a Technics SL1200G and the latest Regas to see if either floats your boat. The Technics has really excellent bass. It its a little grainy in the upper midrange but only in comparison to more expensive turntables.

if you want new TT, try technics SL1200G (GAE). DD system there pretty much the best you can get! Belt driven systems have significant speed fluctuations. Older restored Technics SL1000MK2/3 also are very good, EPA100 (MK2) arm can be dialed for specific cart. New SL1000R is nice, but pricey! 

The new MoFi MasterDeck turntable here seems to be a sonic bargain, the optional cartridge upgrade seems like a bargain as well.  

kennyc

I've seen the MoFi tables and love the way some of them look. Haven't seen many reviews of them

Is the bass adequate when using a digital source?

The reason I ask is that I had the opportunity to audition a couple of power amps in my main system. One was an older  Lexicon, another was a fairly expensive Chord, and I threw in an older Jeff Rowland I use for video.

Result?  None had the bass richness of my usual power amp, a Conrad Johnson Premier 11a from the 1990s.

Phono cartridges will also offer a range of bass reproduction but I'd suggest that before looking there, you first confirm whether any bass shortcomings might not be due to the amplification train.