Advice on what to do?

With my current GP i have no clue what to buy...
I was thinking of asking the forum and hopefully getting some good opinions...
Ok so, so far i have collected the following GP crate items
Santa hat,
Beretta
Whinchester
Xm8 Adv
Anaconda Adv
Deagle Camo
I already have an ak silver
And i got an awm red
Now what i'm wondering is, i have really wanted the thompson or rudolph helmet
(Already spent 200 crates looking for thompson but got stupid whinchester on like 10th crate ever)(And over 100 on rudolph)
But should i go for crates or buy one of the following guns:
Tar-21
M60
RPK
(I know this is a good chunk of text but please respond)