Since there is no need of picking resistance I think a PL 362 would be decidedly an overkill. No doubt fantastic padlock, in fact what I mean that it is too much. It's a totally more than sufficient, but since you pay for the extreme picking resistance too it's wasteful.
PL 975 would be better but I think it is too much. Simply wasteful.
Also the PL 362 has thicker shackle than my finger. Will it fit?
And let's not even talk about the S&G 951

That is totally unnecessary and incredibly expensive

Unless you plan on storing weaponry or drugs inside those boxes

And at that level it's probably easier to open the box with a big axe so it's pointless.
Plus if your company ordered them from the US there would be high shipping cost and you would have to pay customs... It's around 30% here so for the 951 1400$ + 30% = 1820 $ (~1500€...)
So I think those abloys and S&G are not suitable in this particular case. They are simply too much and pointlessly expensive.
I think puck locks are better for this need, I believe they are more resistant to brute force attacks than traditional padlock designs.
The cheap option would be the following:
Now since picking resistance is so emphasized not an issue I would say look into top Master lock padlocks. They are really often dissed among picker, because they are easy to pick, but my experience is that they can have rather good brute-force resistance. Especially for their modest price. And they are very available (which is also an important point of view).
Master 6270,American 2000 (probably better pick resistance but who knows since Master bought them)
Another option would be master 6527, which is shrouded and can be asked with 7 pins...
Master M930XDLH has ball bearing stolid hardened steel body and boron shackle and only for 30$... Around 1/4 of the PL 975 and even less of the PL362.
But again those offer very low picking protection. If that's not a problem I think they are OK.
(Master 6270: Solid steel body and "High security, rekeyable 6-pin cylinder with spool pins is virtually impossible to pick"

. anyway I think it's pretty resistant against brute force and it's really cheap like 40$...)
A very good midway would be:
ABUS makes excellent padlocks in the "Granit" line. 37/55, or it's shrouded version 37/60. Or one step higher is the 37/70 and the shrouded version: 37/80.
RK in the name means they are rekeyable. These Granit padlocks are much better than the Masters, both in physical resistance and lightyears ahead in picking resistance as well (same basic principle as Abloy locks but a little bit simpler).
Also generally better quality than Masters.Obviously a bit more expensive too.
Abloy are also very shiny and very flashy. Granits are dull black with a matt plastic protective layer which makes them look average.
But I think they are still significantly easier to get and in most of Europe than Abloy.
http://www.abus.com/eng/About-ABUS/ABUS-worldwide I'm not sure but here you can either get it or order it at any lockie. (And cheaper too. Admittedly not as secure as the 362, but as a proud owner of a PL 362 I really wonder if there is a use for average people and average businesses where it's not an overkill...) I think they are only sensible for military / government / maybe banking use. Or if you can give me other examples I'm curious to hear:) I've been wondering about it for a while now.
They are usually pointless since the container they secure is miles less strong than the padlock itself.
If I were you or the head of business I would get one of the Abus Granits.