For what it's worth, you don't necessarily have to choose between squats and deadlifts. On ME lower days your main movement is always a squat, dl or good morning variation, but there's nothing saying that you can't use what you didn't max on for supplemental or accessory work. For example, last Tuesday I did max good mornings off pins for 3 reps, then stiff-leg sumo rack pulls, then 12" low box squats for sets of 10. Good mornings were my max movement, rack pulls were supplemental (slightly higher reps and not completely maxed out), and box squats were used for accessory work for the quads (close stance and deep).
Also, on DE days it's pretty normal to do deadlifts for 6-10 singles after your speed squats. Just remember that the idea behind DE day is to work on form and to never, ever miss a weight, even on the weeks when you work up to doubles or singles after speed work.