Replacement for Vandersteen 2ci

The obvious choice would be a newer version from Vandersteen, especially since your current speaker kept you happy for 20 years.

Richard has implemented countless improvements in both crossover and driver technology since the 2ci was released.

You will have to adjust to the new sound. All recent Vandersteen models have better resolution, more extended highs and tighter bass than you're accustomed to.

Need to know your budget and what changes you are looking for from the 2cis. Albert's suggestion is a good one. Triangles are very nice and good prices to be had on their previous line- Celius maybe. Might want to consider Merlin VSM series which is a small footprint floor stander that mates very well w tube gear. That's what I went to after VAndies (2ci to 3Asig to Merlin.

Sonus Faber