A couple things:
First: Hi Joe NoBody. Love listening to you on TSP. And I loved the airgun recomendation. They have become very powerful indeed. If you want to see an interesting debate on the issue, go here: http://thesurvivalpodcast.com/forum/index.php?topic=34805.0
Second: dang you guys for being so persuavie about the advantage of night vision. Now I have another thing on my list screaming for money I don't have. Thanks, really I mean it.
Nelson. Man, I'm gonna take the route some other people have and pomote a 4th option, I would seriously consider more food storage, you sound like you are comfortable in guns and ammo, for now. Even if you split your fun money and go half food and half something else, then you have betted two of your prep areas instead of just one.
Think about this: you will need and want to eat every day almost for the rest of your life.
In a shtf, it may not even safe to hunt for a while. If there is erol, hunting may be lost for a while. Every meal you have available before it happens is a meal you don't have to work for later. Hunting is inherently risky and heaping other dangers on top of it just makes it make sense to expand food preps even a little beyond what you think you will need. To what point, well Joe put it well when answering for ammo preps. Apply that to food over the long term. I don't mean necessarily just in the way of storage but in food production/preservation capabilities as well.
Plus, food is excelent barter, it is an instantly usable comodity. And will be more tradeable for other goods and services than guns and ammo will be. Almost without fail. That's not to say you won't be able to trade, use, buy, whatever, guns and ammo. But which industry is bigger right now, food or guns? Enough said.
Another avenue you could talk is half gun and half medical preps. Go to an aquarium store abd buy a lot of fish antibiotics to store up. Something like that. I'm not saying not to get the gun supressor or nv, if you have progress on your other prep areas that are equal or greater than what you have in "guns and stuff" then sweet go get a new useful toy/tool.
Additionally, if you have a group you are thining of being with or around come shtf, you may see if one of them wants to buy one of those things as "group" equipment. Or your people could go in toether on it. Just my thoughts on it. Hope this helps.