I'd agree with Ramo.
I switched from training the last way he mentioned, pretty much accumulating volume with sets across, to doing conjugate periodization with ME/DE days, not too long ago. Its too soon to say if it is working or not.
Trying to grind out a limit 5x5 or so workout is brutal and a tough workout. I can't imagine working at that high of a limit consistently in training unless trying to peak for a meet or some demonstration of absolute strength.
With my ME days now where I work up to a heavy set of 1-5 reps, I don't want to miss a weight, but I expect the last rep/reps to move slow. If I smoke it and move it quick, I put a bit more weight on the bar, and try another one.
At some point, even though 4-6 reps is strength training, if you plan on competing in a display of 1rm absolute strength, it would be a good idea to get some/a lot of experience working near limit weights which move slow and need to be grinded. At least that's my hypothesis, which other people have proven, but I'm trying it on myself now.
My primary assistance work is now usually in the 4-6 rep range now, occasionally up to 8 reps, and I want these to move quick. I don't want it to be easy, but I want to leave a couple reps in the tank of my last set. These are done after the low volume, slow, heavy reps which are slow and occasionally grinded out.
I usually only end up doing a couple heavy reps or sets for each movement a week. Some weeks, I'll do 2 heavy sets in a movement usually >72 hrs apart. Ex) Taking a heavy set of 5 on Wed ME bench day, then working up again to a heavy double after speed benches Sunday. Its about every other week or so, and I try to space it out where I'm only taking it 'heavy' in at most two of the same movements per week, and everything else gets 1 set.