Which very bright headlamp bulbs?

[BillyJ]

https://www.amazon.co.uk/Philips-12342XV-S2-Headlight-Twin-Pack/dp/B00NMEEOV2/ref=sr_1_6?s=automotive&ie=UTF8&qid=1451516614&sr=1-6&keywords=h4+bulb

Or

https://www.amazon.co.uk/BREAKER-UNLIMITED-64193NBU-HCB-Halogen-Headlamp/dp/B00EPLCP3U/ref=sr_1_4?s=automotive&ie=UTF8&qid=1451516614&sr=1-4&keywords=h4+bulb

Or something else?
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Had: '06 CBR125R + '01 GSF600 + '07 SPRINT ST 1050 + '80 CB250 RSA + '93 Ducati 900SS
Have: '13 GSXR-1000 + '01 CB500S
"The aryan confuser"

[RhynoCZ]

Start with adjusting the headlight and go from there. I use cheap bulbs, tried expensive ones, no difference what so ever, at least not worth the extra money.

EDIT: As you came here for a actual answer, go for the more expensive one. The placebo effect gets stronger with the mount of money you've invested in it. Plus, what nowhere.elysium says, blue colour is actually worse in the real life.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[nowhere.elysium]

Our eyes are more attuned to the yellow end of the spectrum: the blue-ish bulbs look brighter, but we can actually see more by a yellow light, so stick with bog standard ones.
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'10 SV650SF, '83 GS650GT (it lives!), Questionable DIY dash project, 3D Printer project, Lasercutter project

[monkeybiker]

I have fit the philips ones and they are definitely better than standard.

[BillyJ]

I've heard that about yellow ones before but my bandit has cheap blue ones now so anything should be an improvement.

I've also heard that the brighter bulb usually have a shorter life, much truth behind this?
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Had: '06 CBR125R + '01 GSF600 + '07 SPRINT ST 1050 + '80 CB250 RSA + '93 Ducati 900SS
Have: '13 GSXR-1000 + '01 CB500S
"The aryan confuser"

[RhynoCZ]

Yellow glass of a bulb is more restrictive, than a transparent one. In other words, less light gets on the road from a yellow bulb, than from the same bulb with completely transparent glass. IF you ride on wet/snow, the yellow bulb is actually better for your eyes, which is one of the reasons they still use those in the fog lights.

The less light on the road thing was why yellow bulbs were banned in the EU (or at least the most of the countries), french got really pissed.

NOW, a standard bulb is not yellow at all. The colour of the light does make it a bit yellow compared to the modern LED or bluish light bulbs, but it is not.

This is a yellow bulb:
https://ecx.images-amazon.com/images/I/41J5kQDgh1L._SX300_.jpg

Think of it this way, the bulb is just a source of light. The trick is in the reflector/projector and where it is pointed.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[Ben90]

I've always used nightbreakers in the car and bike. The lifespan isn't as long as standard bulbs and Osram openly admit that on their packaging, yet I've not replaced the nightbreaker on my bike in the 18 months I've had it. Last one I replaced in the car was december 2014.

In the car I regularly get flashed while driving over crests in the dark where oncoming drivers are briefly in the beams

The MOT garage popped a standard Lucas bulb in the car and the difference between left and right was considerable. £12 a year well spent IMO, people spend more on air fresheners.
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Yamaha FZ6 S2

[bamt]

I've used the Osram ones and quite like them - they are definitely brighter. I got through two in about a year (or about 12,000 miles per bulb). At the moment I'm on a £1.79 Morrisons petrol station bulb (my last Nightbreaker died during the summer, and I've not got around to ordering more - which also shows how critical I found the difference!).

[Hahadumball]

hid projectors
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Fin: no matter how much I look at It I can't understand what was going through my head, all I remember is going about 80 and redlining it to stop it seizing.
360 Deg... Five 1/4 turns. :- Teflon-Mike 18 Jan 2015