Hey! Anyone used these Bulbs?

(a) Sylvania (9007) XV XtraVision Halogen Headlight Bulb ($16 for two)
(b) Sylvania (9007) SU SilverStar Ultra Halogen Headlight Bulb ($30 for two)
(c) Philips (9007) VisionPlus Headlight Bulb ($18-19 for two)

Has anyone used them? They worth the dime?

My stock bulbs are way too dim, but I myself do not know if it's because of age/brand or whatever because I didn't put them in. All I know is I need better light.
I've been running my brights all the time and I've never been flashed or honked at for it (which is a regular occurrence around here if someone's headlights are 'too' bright). I'd like having a whiter light without breaking the bank, but I also really don't like the longevity advertised for the Silverstars...

Should I bother with the 'specialty' bulbs like above or just go with something stock-ish?