None of them have the harmonic richness of dimensionality that tubes can give.Mikey, have you heard a TEAD Vibe7 with Pulse II? I am not going to argue that it is the same as a tubed preamp, but it certainly has the harmonic richness and dimensionality you indicate are lacking in the SS preamps you have heard, and it certainly sounds different than all the other SS preamps I have owned or heard.
After years of trying many different tubed and SS preamps, the Vibe/Pulse is the one preamp I can live with and have no regrets. Thats why I think the OP should give it a try if he really wants a SS preamp. The absence of balanced outputs should also not be a concern as I use mine into Jensen transformers for the rca/XLR conversion then into balanced amps with no sonic penalty whatsoever that I can hear.