out of the 7 or 8 tests that I did when I found out I was pregnant, by far the best ones were the first response.
The pink line was much easier to see and less messy if that makes sense. It wasn't so fuzzy or indistinct like the clear blue ones were. And now, 5 months down the line, I still have all my tests. The clear blue ones are blue dotty messes but the first response ones still have beautiful clear pink lines!
So my opinion is use first response if you've got the money to choose between the pricier brands.
And, first response gave me a positive at 10dpo!
K.xx