If you want to ween yourself off of UAD's Lexicon 224, Slate just added this and a 224xl and they an admirable job.
They aren't direct emulations, but on most settings for the 224 I can match up easily (difference in Mix %).
On others that aren't 100% close, the UAD still is more "natural" but in the mix I don't notice it.
On gearslutz ppl are asking for a Spring Reverb.