If I may chime in - I think everyone is right. Saving 200-300g will make you marginally faster, and the wheels you’re currently looking at don’t even achieve that.

However, going to a *much* wider rim should deliver some tangible improvements in comfort (and therefore speed) along with grip. In theory anyway - I’ll know in a month or so. By wider I mean 20-25mm internal width. You can use 25mm tires even on 23mm rims, especially if you’re light. The wheels you’re looking at probably have a 17mm inner width, which is pretty traditional.

EDIT: Your Shimano wheels and many others are actually a very outdated 15mm.

Double EDIT: And the vision team 30s are 19mm. Which is more on the modern side. The aksiums are actually 17mm though.