Toppik fattener or fibre for me?

[paradiseepau]

So I've recently started losing hair(around 8 months back) and my hairline is receded a bit and my hair on top has also gotten a little thin but the density is still pretty much decent. To give my hair a more fuller/thick look,I'm thinking of buying toppik and here lies the confusion. I'm a Norwood 2-2.5 so I'm wondering will the fibre will be of any help to me at this stage where I've still got good density,I mean will it make my hair look more thick?
Also,there is this toppik hair fattener which is sort of a gel based thing that also serves the same purpose but there isn't many rebiews/videos/photos about it. From the handful of reviews, it seems to be really good product that greatly increases the thickness and all but like I said there's no pics/videos to judge its effectiveness.

So guys I need your advice, would toppik fibres be ideal to thicken up my hair or the hair fattener or both?

P.S. My scalp is not at all visible and still covered with hair,only my hairline has receded and my hair thinned a little.