I have seen no evidence of the efficacy of the LiquaVade for Formestane delivery. However, user experience and studies are replete with evidence that topical is superior. I'm sure PP has made some advances, but I tend to go for what is proven.
The Formastanzol is more expensive up front, but it is DOUBLE the servings, so it's like 2 bottles for $50 (which you'd need for a good run anyway) and the shipping is also free. If you go to Mr Supps Facebook page and like them, you can also get 15% off, typically tax free. If you pay for results, then it is a value.
There was a really good sale on CEL, like $24 a bottle, and that would be a good value too. However, in this case at least topical >>> oral.
Up to you though, if you want to try one or the other, it's your call. If you search "Formastanzol" on here, I think you'll see overwhelmingly positive reviews.