I wear a 28G in the regular Deco, but had to get a 30F in the strapless version. It has 3 hooks unlike the 2 hooks of the regular version, great for the strapless aspect. I've never worn is strapless, and may never.... but I wear it crossed in the back all the time. The lift isn't quite as good as the regular but it's still better than most average bras I've worn.
All and all I recommend it, but you may need to order a different size than you're used to in the regular Deco