I have the CX speedsuit (don't race CX, but wanted it for the warmth and longer sleeves), it is very nice, but no pockets, which is a bit annoying for training and general riding (I didn't pay attention when I bought it, which is silly as it is not an insignificant purchase, but I got over excited and didn't think it through) but the suit will be excellent for early season TT use. It is very warm, but has a nice breathable material in the arm pits and feels great, the shorts part are amazing, they feel so damn nice to wear and the fleecy inner surface of the top half is surprisingly warm for such a thin material. Longer sleeves mean no gaps between jersey and arm warmers so very nice seal.
I want the summer San Remo speedsuit and the Thermosuit, but they cost so much.