The Hyper 212 and h100i are very, very, very different animals in very different proce tiers.
1. The 212 is a "great budget cooler", emphasis on the middle word. Don't expect it to perform in any way like the H100i.
2. peeps assume water cooling is 'better" than air cooling. When we are talking about CLCs, nothing could be further from the truth. The Noctua NH-D15 is generally regarded as today's flagship air cooler ... it delivered temps of 71C in hightechlegion's testing (see 17:10 mark in video below) while the H100i delivered 73C .... probably thinking that 2C is not a big deal until you consider that in order to get that close, the H100i was
twelve (12) times as loud,
https://www.youtube.com/watch?v=TivNOgQqW-M
3. Essentially it's a budget question:
Air Coolers
$25 - Hyper 212
$35 - Cryorig H7
$45 to $55 - various Scythe Coolers
$65 - Phanteks PH-TC14-PE
$85 - Noctua NH-D15
All in One Water Coolers
CLC type coolers use aluminum radiators, Because of aluminum's heat transfer capability is substantially lower than copper, this requires extreme rpm (read "very loud") fans for them to get even close to air cooler performance. Besides being louder than air coolers by several orders of magnitude, they also mix metals (aluminum rad / copper block) which is a huge no-no in water cooling
https://martinsliquidlab.wordpress.com/2012/01/24/corrosion-explored/
As such, I have no CLCs on this list. In the world of quality All-in-One water cooling, Swiftech is the market leader followed by EK, but the later is much more expensive. Other CLC manufacturers have been making forays here but have yet to see anything that impresses as yet.
With a $1,00o system budget, you are not going to be playing here. A 2 x 120 rad system from Swiftech, pre-assembled with tad, pump and reservoir is $140 ... 2 x $140 is $150 ... 3 x 120mm is $165