I would like some help deciding on some future upgrades

Ok some of the parts of my rig need upgrading at some point,and i have been trying to decide on what to get.

I want to upgrade my keyboard(Razer Arctosa),sound card(sabertooth 990fx onboard sound),and headset(Logitech G35),razer is ok but i have been having problems with the WASD keys sticking randomly,but if i get a new one i want a good one,but one thing i need it to have is media keys,the g35 is ok but i have a pair of $14 earbuds that sound better(music and games)this also why i want to upgrade my sound card(it need to be a PCI card cause it is the only slot open),i would rather it be a headset(mainly cause i don't like a lot of wires,which i would get from headphones and clip on mic).

Got any suggestions?

I have a Logitech G15 that is pretty good, I would bet a mechanical keyboard with anything but black switches will probably be an improvement, and shouldn't feel like they are sticking at all. membrane keyboards are probably more prone to that. Thats just speculation based on what I know of the technology. I have been struggling to find a headset that is comfortable and sounds good so I can't help there. Good luck!

Regarding a sound card you could look into cards from Asus. They have some great stuff like the Essence STX (for PCI-e slot) and ST (for PCI slot) cards. If these are too expensive then they also have the D1 and D2 or DS and DGX. You could also look at some headphone amps, but I don't think you can get the same performance out of them in the same pricerange as a sound card, but don't take my word for it though, you have to look on head-fi.org for that :).

Well i have been looking at some and i am considering the Corsair Vengeance K90,cause it has dedicated media keys and is backlit, and i would love both only problem is i know i will never use the macro keys,so i may go with it unless any knows of one that has dedicated media keys and is backlit.

I have been hearing that is the Asus Xonar DG is really and it's sound quality is on par with the sound blaster x-fi titanium(at least that is what i heard),plus it has a headphone amp built in.

I would have to use the DG,cause the DGX is pci-e,and i don't want to take up a pci-e slot cause i play to later down the road(when i can afford it lol) buying 2 more video card to run tri-fire,and i have a sabertooth 990fx board,and the only slot that would be left is a pci slot.

Also i have heard good things about the steelseries Siberia V2, would that paired with a DG be better than my G35? Cause with it i am not getting any noticable positional audio.

Soundcard: Auzentech Forte 7.1 (PCI-E x1)

Thank me later.

You could try and look at the following thread from head-fi.org. In the opening post there is a comparison between many different headphones, both for gaming and music use, with the testing of positioning as well. You may find what you need there.

Link: http://www.head-fi.org/t/534479/mad-lust-envys-headphone-gaming-guide-updated-8-11-2012-images-added