If you're wanting something with a big block of copper like the Scythe one, I'd grab a Zerotherm BTF95 and attach a fan to it. That's what I did, and it cools better than my gigantor Thermaltake HSF did, and it had a bigger fan.
Then just get the Thermalright Ultra 120. It is one of the original tower style cpu heatsinks and after several years it's still one of the top 10 heatsinks for both Intel and AMD cpu's. I'm still using my original one and it is still producing outstanding results.
Do not bother with the copper version. It was done just for show. Only 3,000 were made. It weighs over 4 lbs (1.9 Kg). Expensive at $100.00. Technical reviews clearly demonstrated it did not cool as well as the original Ultra 120 or the newer Ultra 120 Extreme. If you go back to the Frosty Tech web site you'll see that there are no all copper heatsinks in any of the top lists or categories. Didn't we go over this earlier?
Peltier cooling is very expensive. You'd better read this guide to peltier cooling and see for yourself:
BTW - Which Apevia pc case do you have? The link you posted for the case was actually a link to an led case fan. I'd like to take a look at photos of your case. I want to check case ventilation, air flow, and cooling.