So I recently bought a selection of 7950s... and ended up returning most of them... except for a pair which I kept (and another pair which I've since sold, because I missed the return date).

The one's I kept were the vapor-x from sapphire absolutely the best card out there.

HIS w/ iceQ is the close runner up.

reference is 3rd best.

Gigabyte is ok... but don't expect to mine with them in a case. These guys need aftermarket cooling on the backside or extender cables so they don't cook whatever happens to be near them.

avoid everything else unless you're planning on watercooling.

This is more complete https://en.bitcoin.it/wiki/Mining_hardware_comparison#AMD_.28ATI.29

Now i have set it to GPU voltage 0.993V @ 1080Mhz and mem 1.5v @ 155Mhz with this settings in cgminer -g 1 -w 256 -I 10 i get 555Mh/s ,if i set the I to 13 i get 575Mh/s , in scrypt with the right settings i have mined with 620Kh/s, but this is enough for me i have aside this an Sapphire Dual-x HD7870 Xt (has core voltage unlocked , i have set it to 1.01V and 1070Mhz core , 155Mhz mem,same settings in cg miner as 7950 and i get ~470Mh/s  ) ,i mine with both at 1025Mh/s with 385Watt/hr power consumption @ wall.

I recomand you the Sapphire HD7950 Vapor-x OC with BOOST , i have one , all voltage are unlocked (i have the one with 8+8 power pin) , low temps (mine stays at 63C with fan locked at 48% ) and low noise.

I have the Sapphire 7950HD (11196-16-20G)

It can do 690-700kh/s at 1175/1600 1.15-1.2v with the right settings in cgminer.

Xfx is great for the warranty but suck for hash speeds. I have 3x Xfx 7950s that only do 630kh/s and clocks only reach 1075/1375 locked voltage at 1.25v
I will never sell the XFX cards, they will go in my gaming computer eventually. The lifetime warranty is unbeatable.

There is one use left in one in the last coupon. Other than that you just get the default amount.

Only takes like 10 minutes. Its not that bad.

No. In fact, I would argue that things have progressed such that you should trust them less, because government regulation is now getting in the mix. You now need to worry that your funds could be seized by a government at any given moment, independent of the trust you have for the exchange, etc.
No, it will be true for a very long time.

Your question cannot be answered because not enough data exists to process your query.

Very well written

Really not being a negative thinking person myself, but unfortunately - while reading the Do not trust people! article I got hit by mentioned examples and points again and again doh ...most reminded me of my own experience with so called friends or even worse some trustworthy family mebers...

Sad the it was in-fact only yesterday, when I was trying to explain my GF that there should be nothing like an ultimate trust or faith in someone at all. It always, directly and only depends on the "motivator" value for any person out there. My past taught me that under various specific circumstances EVERY single person will become able to "Sell you off"...