I realize I'm probably in a minority. One reason for my dislike of them is that I was sort of traumatized on my first cycle when my beta fell right before a weekend, and feeling bitter and discouraged as I was (I mentioned my husband and my falling out in a previous thread), if I wasn't pg, I wanted some coffee and alcohol and a hot bath, though I waited for the beta results to go off of meds. Since my clinic didn't want me to beta till 14dp5dt, I could be pretty sure any negative result I got was some kind of reliable. But it was hard seeing that "Not Pregnant" at 5AM -- of course, with the P4 making me go so much, getting that FMU meant getting up at o'dark hundred -- with no one to talk to, exhausted, sad.
Now, my second beta, diabolically enough, fell on a weekend, too (actually not an accident; the clinic I used performs all tx's on the same day of the week, barring they feel it's better to tx at 3 days or 6 days), so I used an HPT again. And while I was thrilled to see the "Pregnant" on the HPT, it was probably more stressful than the first time up till then, plus, you know it only means you have enough hcg in your blood to trigger an HPT, and your quantitative beta may tell a darker story. So, that's my take. But I was batty as a belfry for both my 2ww's, so just hang on.
Wishing you well!
Maggie (in VA)