As a person who owned three different Vandersteen models over 20 years if you enjoyed your time with your 2ci's then your safest bet is to stay within the 2 series and buy a newer version. There is a pair of 2CE Sig II's listed on Audiogon now for $1400 and honestly that is a steal. I personally would stay far away from Tekton and as to Spatial they are a great speaker from a good company but they are different from Vandersteen. I have owned a pair of M3 TM's and if set up properly they are very good but for you could be a risk that you may or may not like. So stick with what you know.
https://www.audiogon.com/listings/lis9h377-vandersteen-2ce-signature-ii-30th-anniversary-full-range?refsource=hifishark
https://www.audiogon.com/listings/lis9h377-vandersteen-2ce-signature-ii-30th-anniversary-full-range?refsource=hifishark