Clear blue vs first response

I am wondering for those of you who have used these ovulation tests before. which one did you find worked the best and fastest and most accurately for you. I have first started off with first response and I did get pregnant the first time I tried but unfortunately it ended in a miscarriage and once my period got started again my husband and I have use first response again but it hasn't been working for the last 2 months. so now we're going to try with clear blue and hope for the best.