Remora vs nano strobe

[wader]

I an a beginner UW photographer. I have a Fantasea housing for a Nikon Coolpix s-510. I want to get a strobe and price is a concern. I am considering either the Fantasea Remora or a Nano single. The Remora is about $50 more in a kit with similar extras. What set-up would be better for me?
Another option would be getting the Nano with a focus light?

Suggestions and opinions would be greatly appreciated.

 

[RAWalker]

I use 2 Nanos with good results. However consider that the guide number(relative power) is 12 for the Nano and 20 for the Remora and the Remora is rated with a wider lighing angle.
In the case of my dual Nano setup adding the guide #s gives me a relative number of 24 but with a wider possible angle of coverage and less shadows than a single Remora.
Probably the cheapest dual strobe set available.