Personally, I couldn't give a rat's booty about maxes. They're just numbers after all. Not to mention all the lies incorporated in them when people talk about their maxes.. I just stick with what I'm using for my regular sets as a benchmark.
Maxes are very important in my opinion, they show exactly where I am at.
if you use one rep max calculators they can give you a pretty good idea of what your max is. shouldnt max out too often anyway.
I's say that's an opinion that can be judged by none other than you...if your'e in it for show and the glory of your numbers(whatever that may mean(and i guess everyone is to an extent)) then it may mean something.
You need to quantify what type of squat you are doing: 1/4 (just bending the knees), 1/2 (above parallel), full (below parallel) or ATG (at the ground). You might be able to do 300 pounds to 1/4, 200 to 1/2, 185 to full and only 135 to ATG. Which is more useful? I would take the ATG with less weight any day. Requires more flexibility, balance, and stresses almost every muscle in your lower body.
One rep maxing is almost entirely dependant on neural processing, so you may find that doing 200 for 10 reps affects your 1RM very little.