Again, this is only my opinion, and it is different to most other's.

I too had the receded hairline - and thick hair elsewhere.

I have gone for a full topper i.e. the whole top of my head is covered by the base.

Why do you ask?

Because I feel having small units where the recession is makes it very difficult to achieve proper blending. It may be able to be done, but I believe it creates a large amount of work and you need to get things completely right.

My opinion is if you're going to wear, take away all the unneccessary hassles and just shave the whole top of the head.

Only my opinion, but that's what I do.