OPKs - never used them and don't know if I want to. With the last two children we pretty much got down to it every day and fell first month both times. I realise thought that was 10 years ago though and things probably won't be as simple now.
Most month I usually get a twinge and lots of EWCM at around CD8-10 anyway and am pretty regular (26-28 day cycle).
Are they simple to use? Any particular brand?
Thanks