Have bought more of the digital OPK's as that looks as though its the way to go. Thanks for all the advice ladies its much appreciated.
I didn't use the monitors, but I did use the digital OPK's and they are absolutely my preference. You either get a "smiley face" or a blank face. I hated having to interpret which line was darker. For me, the extra money was worth it.
I prefer using digital monitors to regular pee-sticks. I was using the digital ClearBlue (with low, medium, high) and it was great for my varying cycles (25-35 days), always accurate. I also noticed that the digital one gave my ovulation date 1 day earlier than a regular pack of pee-sticks (yeah I did some comparisions!).
I found the digital and saliva OPKs much more accurate than the pee on a stick kind. I broke down and invested in an expensive digital OPK and got pregnant the next month. May have just been a coincidence, but I'll take it. I also figure that I can use the digital OPK at a birth control method after the baby is born, which helped me justify the cost.
Good luck and tons of baby dust to you!
While I'm asking does this also apply to HPT's too!