I have got 4 sets. Some tubular, some clincher. I have also got some Stan’s Crest and some Mavic Open Pros.
They are lovely rims and a nice bit of bling, but anybody who claims that they are appreciably different to a decent alloy rim is kidding themselves/trying to justify the investment.
It’s the same old story – a bad wheel builder can make a dog’s dinner of the best components, but a decent builder can build a much nicer wheel with cheaper alloy rims. I think that spoke tension, lacing and the skill of the builder make more of a difference than the components. But, all other things being equal, ENVE do make a nice rim.
It’s also the same old story on price – if you can afford it, why not? If you can’t, they probably aren’t worth not feeding the kids or selling an organ for.
For me, I like them, but I am not an evangelist for them. In some respects, I should feel better about spending this much on wheels, but ultimately they just go round and hold my tires on. Are they stiff? (yes depending on the quality and tension of the build). Are they light? (yes, but not appreciably lighter than an alloy rim) Are they expensive (yep!). Do they look nice? (in the eye of the beholder). Are they well supported? (in my experience, ENVE really do back up their product).
As for the stiffness debate, surely the width, compound and pressure of the tires squirming away under the rider make just as much of a difference as the perceived stiffness of the rims?
Back to the original question – worth it or not? – only you can decide. On purely objective grounds, probably not, but we are emotional beings us humans. If you have the cash, and like nice things, they are worth it. If you have to make serious sacrifices, only you can decide whether those sacrifices are worthwhile. So it was, and so it ever shall be. And this logic can be applied to any purchase of any product. That’s why hyper expensive and hyper value products exist in every product category, whether cars, watches, groceries or bicycle rims.