I have a Suzuki GS150 since May/June 2008, it came with DENSO U24ESR-N. I used an NGK CR8E after replacing the perforated carburettor diaphragm. It was not as good as the Denso U24ESR-N. So I bought Denso from Suzuki Showroom and it is much better. I am not saying Denso is better than NGK, its just my observation that in Pakistani markets NGK has multiple levels of quality and fakes, whereas Denso doesn't. You should buy it from Suzuki showrooms only, with SGP logo on the cover.
From: Spark plug cross reference
Possible spark plugs for NGK CR8E:
Aprilia 297921
Aprilia 297920
Autolite XS4303
Autolite 4303
Bosch UR2CC
Champion RG94C
Denso 4126
Denso U24ESRN
Denso IU24
Denso U24ESR-N
Denso stk 4126
Honda 98059-58816
Honda 98059-58817-00
Honda ZH980-004-000
Honda 98059-58816-H0
Honda 98059-58916-00
Kawasaki E92070-1169
NGK stk 1275
Splitfire SF430C
Suzuki 09482-00456
Tacti V91104126
Torch B8RC
Yamaha 94703-00411
Yamaha 94701 00330
Yamaha 94700-00411
Yamaha 94701-00411
Yamaha 94703-00330
Yamaha 94700-00330
Yamaha 94701-00330
Yamaha 94703-00329
Edit: Sorry, I didn't check the original post date.