First of all, it's hard to find WEM. I just bought a set on eBay for the Gato.
I always consider GMM pretty hard to beat.
I used it for my CA-38 at Guadalcanal and was delighted with it.
Usually GMM is the most expensive choice, but also usually has the most stuff.
BTW that model is probably my favorite 1/350 WW2 ship ever, hands down.