First off, if this question is about a 1995 SE, then it shouldn't be in the 1987 to 1991 forum (honest mistake I suppose!!!!)
There are many kinds of replacement headlight bulbs out there. I personally run Piaa Xtreme White Plus low beams, but these are a little more spendy. Others are using Sylvania Silverstars, Sylvania Cool Blues, Piaa Super Whites, Matrix, and actual H.I.D. kits (Smellbird).
From what I have found replacing just the bulb doesn't make the WORLD of difference. I was actually way more impressed by upgrading my factory fog lights with Blazer driving lights. These produce the brighter light and better pattern that you are looking for, at a reasonable price. I bought mine at Checker Auto for around $75, but I think you can get them off of Club GP for $59.99.
There'* my thoughts based on my experience!
*EDITED* The headlight bulbs are simple to replace, but if you're looking to upgrade the fog housing, a little more time is involved!*EDITED*
2004 Torch Red Coupe
2001 Pontiac Bonneville SSEi - 103,000 miles - Galaxy Silver - Daily Driver
1994 Pontiac Bonneville SE - 209,000 miles - Light Gray Metallic - SOLD