I do like the Revelwood stallions. First Kiss is one I was contemplating to breed from a while ago. Basically with him, I wouldn't go and buy anything by him, without looking first at the mare and assessing the foal as an individual. He can throw either way, over a TB mare I'm not so keen on him, as with Gidji, I prefer the more compact types and he tends to throw lanky types over the tb's. However over a nicely put together, uphill and compact WB mare, he can throw some very nice types. He also throws lovely temperaments and most amatuer (not beginner, but YR's that have been on the scene for a while) rides can handle. However they DO pick things up easily and so you have to be careful when training them as I know of a couple of First Kiss's that have been real handful's on the ground when not in capable hands.
I personally wouldn't buy one of his progeny unless it was a VERY nice type, compact and uphill, and leggy. If you're only starting out in dressage, you REALLY want something compact, fairly short coupled and naturally under itself, the longer less compact types are much harder to contain, then when you get into a test you can really come unstuck.