Hydor nano or Jaebo RW8 for 5 gallon pico

[Indiana Reefin]

I am going to be setting up a pico reef in the next couple of months and am getting my equipment list started. I have a fluval spec V. I am looking at getting a power head for my tank since it is very difficult to get your hands on a Minihet 606.
Should I do the Hydor nano or the Jaebo RW8 for a LPS and softie tank?

[Trueno22]

rw8 would be overkill. rw4 would be perfect.

[Indiana Reefin]

I'm sorry I meant rw4. RW4 wouldn't be too much?