As far as lift capacity goes, I wouldn't worry about a 3# difference for warm water.
Plates are plates are plates, for the most part. If you go with Halcyon or FredT or GUTS or one of the other well known makers, you'll do fine.
Is the eclipse the new Halcyon wing? I have heard that it is constructed with an interior bladder, but ther is no way to get to it if it punctures. That may or may not be true. If true, I wouldn't buy it.
Oxycheq is getting good reviews, I just don't know about their track record since the wings are new.
Halcyon is tried and true, although people are complaining lately about punctures and seams. I have a punctured wing, but easily fixed with aquaseal.
I'd be tempted to go with the Oxy wing, depending on the price, I am sure that they must be cheaper than Halcyon?
Chris