Can anyone recommend / link me to the ones with more ink? I've had some strips recently and they are so hard to read, not least of all because the lines are so faint. The sainsbury's ones are much better, but a bit expensive. My cycles are not quite regular, so I tend to get through several before I start to see a line, then I test 2x a day (2pm and 6pm) until I see the surge. I can get through 8 a month, so at £1 each, sainbury's ones are not ideal.