Alright, so the idea is to get all possible weapons & mods, so you can choose what to equip when you create a loadout ?
That makes sense I guess, I just hope I'm not gonna waste too much Requisition on crap I'll never use

Anyway, thanks (again) for the advices guys !

Personally my advice is: 500 boxes ->3k boxes-> anything on the shop that cost 10k or less-> 12k boxes-> everything that cost 16k on the shop->30k boxes.

If you play CSM get a Meltagun ASAP and equip it with your meltabomb setup. Having people destroying vehicles is what wins games plus it gives quite a bit of exp as well

You will waste it. You will hate or never use some weapons, but you will still get stuff for it. I am always happy to get mods for the PF/PK, because i never use it and its just another waste of 30k Req

Figure out what sort of weapons you like using most, identify the boxes those weapons and mods are in and try to target those.

For example, I main bolter Tacticals/Traitors. What I'd do is buy 500R boxes until I get a Box Mag, then move on to 3000R boxes until I get a Textured Grip and a CQC barrel, and then go for 12000R boxes to get the Drum Mag. Those three are widely recognized to be the best setup for a boltgun, with the Box Mag being the temporary solution until you get the drum.

Unless you hit it early on in boxes, I'd also get a Grav Gun or a Meltagun from the store to have the option of making a dedicated tankhunter loadout with that and a Meltabomb.

If you prefer other classes/weapons, figure out what you'll need for those and try to get there with the minimum amount of boxes. Unless you're some kind of DaVinci jack-of-all-trades genius, you'll never use all the weapons and mods consistently so they'll end up dead weight in your armory.

The very first 30k box I ever opened contained an alt Chaos Power Fist, which isn't even a different skin from the regular one you can get for 16k in the store.

The crushing disappointment was palpable.

Thanks to all for the clarification, I was not sure at all.

Just to mention, if you reached a box limit, where a pop-up leads you to buy another rank of supply crate,
it happens to me, after a few patches (maybe not reading patch-notes with full awareness), suddenly some new weapon add-ons were included and I was also able to buy some 500 and 1K boxes again.
Maybe I have missed something

IMO while in alpha-stage and EA, for testing and getting the stuff ina while was ok. Acceptable.
But after Launch, still hanging with this mobile-game like lottery is kind of
...sorry, here is no space for ranting

Get 0,5k boxes > no more unlocks in them > get 3k boxes > no more unlocks in them > get 12k boxes> no more unlocks in them > get 30k boxes

Exactly, I kinda like your idea !
I spent all of my Requisition on 500 boxes on my Eldar, got all of them but only got stuff I will probably never ever use because there's nothing on those boxes that is usable for my specific loadout, so that's a complete waste of Requisition
I was luckier on my Chaos Space Marine and found a few stuff I'm actually using right now, so ... if in the end we have enough Requisition to open everything it's not such a big deal, but I've never liked RNG boxes anyway, I don't know why MMO devs keep on adding them except to piss off their players

I like RNG boxes for cosmetic items and accessories, like in Overwatch for example. Not so much for actual gameplay stuff.

True, i found a chaos Alt. Auto cannon in a 12k box last night. imo buy weapons and boxes to get mods.