preamp upgrade suggestion around $2000

Hi,

I am looking to upgrade my preamp.  I am currently using a Luxkit A3300 preamp.  Other components are:
Naim Uniti Serve streamer
Musical Paradise MP-D2 DAC
Otomon Lab custom build 300B amp
Spatial Audio X5 speakers

I am looking for a tube linestage between $2000-$3000.  From several years ago, I read good things about the following:

Cary SLP98
Modwright SWL 9.0 SE
Supratek Chardonnay
And more recent ones with good reviews:

Coincident Statement LineStage
Linear Tube Audio MZ2/MZ3
Don Sachs Model 2 preamp
I have three questions:

1) Is there other models I should consider?  
2) are those in the first group still good options since they are older models?  3) anyone have experience in them and can do some comparisons?