Meoweth , I really encourage to look beyond the words “ surf resort” funky fish is inside two chains of barrier reef and island and their website does not even mention surfing as an activity! The outer not the next chain of island takes the brunt of the swell and then they are diluted again.
Outer chain Tavares, Cloudbreal , lighthouse Namotu lefts and right and swimming pools and others, you will need a boat ride to each or any.
A really good way to review potential anywhere is using google earth and google maps in tandem with the name of your potential resort.
I then read reviews on something like trip advisor and check my thoughts that way. I then overlay stuff like our surf map page and maybe wanna surf! Read their reviews, check what they say about your home break ( gives you an idea of their bias.)
Given several trips to Fiji and nothing of great accessibility from the inner island or much on the coral coast, I wouldn’t go back for surf!
Mentawais, if I was cashed up there is one resort I’d go back to in the Playgrounds area. At over US $ 2500 per 10 days.
Cheaper I would consider Krui for a longer stay or the other extreme eastern end of Indonesia at Rote there are a number of cheaper stays but an epic reef break with quieter days.
A place you could review is New Caledonia, offshore reefs but a couple of places the swell gets to the main island .
With a little nous it can be cheapish!
The further out I recommend to you, I would like to know how self sufficient you are in surf safety, as the outposts of surfing have no,lifeguards.

I've taken up troll hunting just for fun, instead of a rifle I'll just use a pun! 冲浪爷爷