ok i just changed my squier strat strings and i put fender standard tension bullets on it. and really, i dont see an improvement in sound. more like it got worse. i play stuff like red hot chili peppers, my amp is a fender 15 g. im saving up for a vox ad30vt amp tho so i hoooooopppeee that that makes my sound improve. also i have the stock pickups in it and i dont know anything about pickups, so please any advice is much apreciated.

and obviously im on a budget so best quality for my money is what im after. thanx!!
A new amp should give you what you want.

+1 on the Crate V series, or look into peavey classics.
Call me Wes.
Fender American Deluxe HSS Strat
Chicago Blues Box Roadhouse
Bad Cat Cougar 5
1957 Gibson GA-5
Ceriatone 18w TMB Combo
Hughes & Kettner Tube Factor
Various Ibanez TS9s
Weber MASS Attenuator