Month 4 of Trying

Hey all! This will be the 4th month we are trying 33F and my husband is 32M. What is the best ovulation test strip kit? I’ve been tracking my BBT for a year but with each month, I think it might be better to do the test strips in conjunction with taking my temp. My husband had slightly lowered sperm motility that his doctor wasn’t too concerned with and basically told him to wear loose undies and take vitamins. Basically, just trying to up our odds.