Is a Linn Sondek LP12/Lingo/Ekos with a Cirkus update, the last turntable I’ll ever buy?

I don’t know why people keep saying that the Linn easily goes out of adjustment. Once properly set up, the setup should last for years. However, the Linn is VERY sensitive to footfalls and if you have springy floors, it will skip if you look at it the wrong way.  I had to put in a wall shelf, which worked wonderfully.  That said, if you’re not overly curious about anything else, the Linn can certainly last for many years, as all components are replaceable and upgradeable. I would not suggest buying a Linn unless you know a good setup person, as setup is tricky. OTOH, Basis turntables were designed to be set up properly by anyone with reasonably decent turntable skills. Something to think about. I replaced my Linn with a Basis, which I prefer, but I certainly could have lived with the Linn.  It's a classic.  

If money is not an issue, buy it and let your Linn guy set it up in your house for you.  This will probably cost you a couple hundred for the setup, and you might need some new springs, grommets  and a belt, which are not overly expensive, BTW.  It seems to me you want go get the Linn thing out of your system to see why it has remained so relatively popular over the years.  If that's the case, go for it.  When well set up, it has a really nice sound that many people love. I was curious about the same thing and I owned and loved it for several years.  

The Ekos also makes a big difference.  I first bought my Linn with a Rega arm, I think the 600, but when I upgraded to a used Ekos, the sound improved to a great degree.  I think $2400 is a good deal if the table is in good shape.  I can't say if anything will be better for $2400 because I haven't heard anything else at that level.  But to be totally honest, if I were buying something new, I might be tempted to go for a new Technics.  Looks good, no belts, speed issues.  And supposedly sound very good.  But I haven't heard them either.