At the time of writing this I would say wait for a sale. I think I've put in enough time to be able to say that. Right now it's not worth full price, don't get me wrong it's fun, but once you get into the higher difficulties things get a lot less fun.

I personally am an Ogryn, I've bought every weapon skin and cosmetic I can with dockets. I have one penance left and I have been trying for weeks at this point to complete it (Heavyweight Champion). IT's been the only thing keeping me coming back, and yeaaaaah... me done.

If you still choose to buy, I would advise a VPN to help with connection issues, it's helped me since the beta.