How many LP's

I find that there are about 100 that I come back to again and again. I could live with that many, but a few thousand is better.

What technology is best? I vote for air bearing, although a prominent and expert guru (Ralph K) disagrees. Even so, I'll bet he'd like my system.

I use a DIY air bearing TT with a Trans-Fi air bearing arm, playing a Koetsu platinum cartridge. The air bearing TT replaces a Nottingham Analogue unit, which has been updated, and is essentially a Dais. Which I recommend. But not as highly as the Trans-Fi arm, which is $1000 and plays with the best.

Lewm, you make a good point. For every one of those 100 jewels there are many also-rans.

As for which ones? Other than the usual workhorses, La Spagna (BIS); Scottish Lute Music (BIS); Laudate (Proprius); Cantate Domino (Proprius); Wagner's Ring Cycle (Solti - the best is on Telefunken);   Hearing Solar Winds by Hykes (Ocora); Gorecki Symphonie #3, with Stefania Woytowicz (Erato - sound track to the movie Police); Salve Feste Dies (Phillips); Beethoven's Emperor by Gieseking (Varese - stereo - repeat stereo - recording from WW2 Berlin - you can hear the anti-aircraft cannon at one point - and you hear the Emperor as you've not heard it before).

@bdp24 

About that TransFi arm - let us know when you get it. May I suggest a few mods?

1. If your table is not suspended, it may benefit from an aluminum tower. I use 2" aluminum rod.
2. The arm has flat surfaces, which allows you to add damping gel all over the place.
3. The wand has holes of about 0.25". That's ideal for adding brass weights to increase the mass. Helps with cartridge matching.
4. I use a premium aquarium pump from HiBlow. That air goes into a surge tank built like a glass pack muffler, thence to a precision regulator (Fairchild), then a gauge (mm of mercury), then another surge tank. I use pressures ranging from 10 mm Hg to 35, depending on cartridge, record, and mood.
5. TransFi wand can be matched to the cartridge with immense precision. I use a very smooth calliper to adjust the cartridge into perfect (0.0004") alignment with the wand, then a torque screw driver to adjust torque.
6. Other adjustments are indicated in the manual. Some are easy, some fiddly, but all are intuitive and stable.

Let us know how it works for you!

@lewm 

I may have some good news for you. The TransFi is a low pressure system, and works on an aquarium pump, which is virtually maintenance free. No oil, no mess. They are also low noise; perhaps, with a good enough box, quiet enough for the listening room, although I prefer outside.