Which chipboard + underlay +laminate combination is best?

Hi all,

I'm having a builder lay down some laminate for me and I wanted some advice interns of underlay and if additional sheets of chipboard would be necessary.

All the old carpet and underlay has been removed with just the original thin-ish floorboards left. The floorboards, while in decent condition aren't very pretty (it's a 1960s/70s built house) and there are a few loose/wonky ones.

Anyway, I was thinking of laying down chipboard to level out the floor, to guarantee stability, then lay this type of fibre underlay on top:
http://www.screwfix.com/p/wood-fibre-underlay-boards-7m/7824r#product_additional_details_container

On top of that I intend to lay my 12mm laminate flooring. Is this overkill?
The floorboards aren't too bad, and I figure hammering them down should keep and un-evenness/movement to an absolute minimum.

Which of theses options does in make most sense to go with :
1) 18mm chipboard + simple foam underlay +12mm laminate
2) 5.5mm fibreboard underlay + 12mm laminate
3) 18mm chipboard + 5.5mm fibreboard + 12mm laminate

The ares to be boarded are all bedrooms.

Thanks in advance for your help.

 

What is quickstep laminate?
I'm looking at one of the 12mm laminates at Wickes

 

Thanks very much. I'll go for that option.
Does anyone have any opinions on this Vitrex Underlay instead of the fibreboard:
http://www.screwfix.com/p/vitrex-premier-wood-laminate-underlay-boards-5mm-9-76m/68038

The review seem good and, whilst upstairs in the house, the subfloor is old floor boards, downstairs it's concrete.
Thanks so much for all your responses

 

Thanks for that. Unfortunately that underlay is bit above my budget, which is why I was looking at the Fibreboard or Vitrex that I mentioned.
Appreciate your response all the same