although they are nice clinical processors they add zero warmth. totally transparent would be more my way of thinking of them.
for real warmth in compression have a look at
softube stuff - 1176 FET, or CL1B.
or
waves CLA bundle
or
UAD neve 33609
for warmth without compression
bootsie ferric
or
wavearts tube saturator
or
soundtoys decapitator
or
URS saturator