I went from the Freya+ to the Benchmark LA4 and Holo Serene. I like both much more than the Freya+ (both can be found used for $2500-ish). I realized I do not want to add anything to the sound with a preamp (especially noise). I let the amp and source do the flavouring. I also compared these 2 preamps to my now sold $7k CODA 07x. Again I like the LA4 and Serene for the utter silent delivery of sound.
I say this as someone who is amazed at how great both the Schitt Yggi+ Less is More DAC and the Aegir amp (20-watts and used as a headphone amp). Schitt is now a go to vendor when I need something.
The LA4 is more feature rich and the Serene is maybe a touch warmer. I have not done real deep A/B tests with both.