Getting a TCR Adv 2 which comes stock with Aksium Race wheels. They will be for training.

I'm getting a set of race wheels to go with them, should I get a used set of WH-7800 Dura Ace wheels (1580 grams) or the Hed Bastognes (Sub 1500)?

If anybody is using or has used the Bastognes, are they stiff, or noodly like the AC 420's? I'm leaning towards them anyway, because the spokes are more easily replaceable then the WH-7800s and the Bastognes haven't got reports of cracked rims.

Is there a reason I should get the 7800's over the Bastognes?