I tested the HUUB Anemoi size M, which was too big for me. It did pretty well even then. I've heard that the Anemoi+ is ~ 2w faster.
All the suits are going to be faster than a sleeveless kit or 2 piece kit. At least for 98% of all triathletes.
I've seen the exact same suit test as much as 13w different on 2 different people so you can't really go by manufacturers numbers, This applies to more than just suits btw.
(I've done a lot of manufacturer testing, almost all are above board, some, well...)
When it comes time for me to get a new suit, I typically do is order in 4-6 suits then test them in the tunnel.
That's the suit I've been racing in the last two seasons, actually since 2015 has been the Kiwami Spider (full disclosure I've done several testing sessions for Kiwami and had input into the original spider design) and now Spider 2 LD Aero. This is the probably the suit I'm wearing in 2021. Sure there was a suit that was 2w faster at -10yaw but not 0 last time I tested which isn't enough for me to worry about.
Now if you're not coming to the tunnel to test with me, I think everyone should, and you're not going to field test, then you should buy 4-6 suits. Yeah it's going to cost you a bit to ship back. Been there, done that USPS thanks you.
Try each suit on, ride on your bike indoors a bit, look how it fits especially around the shoulders. How does it feel? Is it comfy?
Keep the suit that seems to fit the best and is then the most comfy to wear. Bonus points if it makes you look intimidating or color coordinates with your bike, bar tape, helmet & shoes.
Brian Stover USAT LII
Accelerate3 Coaching Insta