Fan speed isn't everything, heatpipes and other factors need to be taken into consideration.
The versions I own are the PCGH, which of course comes with two fans rather than the one of the normal version. The cooling is exceptional, I ran P95 last night on a 1600 AF with an all core OC of 4.1ghz and the max temp was 42c with the Brocken 2 after 30 minutes.
I'd skip the H7 entirely, it's too close in price to the likes of the Mugen 5 and Shadow Rock 3.
Of course fan speed isn't everything. But it's a significant part cooling performance. A fan that moves 28-031cfm at 700rpm move 60cfm at 55-60cfm at 1200rpm.
Below is test results of Alpenfohn Ben Nevis on i7-4960X Extreme Edition @ 4.0 GHz ambient 21c. Still want to say fan speed doesn't make a difference?
700rpm = 65 ° C
900rpm = 63 ° C
1200rpm = 60 ° C
1500rpm = 57 ° C
Below is Thermalright TRUE Spirit 140 Power, TRUE Copper and NH-D14 with 2x fan at 640rpm, 1200rpm and 2500rpm delta temps on i7 @ 4.2GHz. Air entering cooler was 21-24c open test station.
Cooler . . . . . . . . . . . 640rpm . 1200rpm . 2500rpm
TRUE Copper . . . . . . . 65.3c . . . 54.3c . . 47.2c
TRUE Spirit 140 Power . 59.4c . . . 52.55c . 43.25c
NH-D14 . . . . . . . . . . . 59.65c . . 54.55c . 46.3c
I understand this is much higher wattage CPU, but still we can see a big difference. With 2x fans at 640rpm temps are 10c, 6.85c & 5.10c higher than at 1200rpm respectively. At 2500rpm temps are even lower, but as that's excessively loud to most users so not important.
Mugen 5 is about 5c cooler, but at £42.95 it's hardly "close in price" to £34.99 price of H7 .. that's £7.75 higher priced but out here on OcUK.
H7 is within a couple degrees of Shadow Rock 3 and costs £8.00 lower priced, also out of stock so OP can't get it here on OcUK.