Replacing power supply in old dell

im looking to get a new power supply for my dell e510 desktop

its a good old desktop that i like to keep around only has one problem and thats the bootup amberlight issue that alot of these dells have

for the most part people fix it with a new power supply so im going to try that first

these are my specs

Intel Pentium 4 630 Prescott 90nm Technology

4.00 GB Dual-Channel DDR2

256MB ATI Radeon X300/X550/X1050 Series (ATI)

2 internal drive 1tb and 500gb

im looking at these as of now

PC Power and Cooling Silencer Mk III Series 400W

CORSAIR CX430M 430W

SeaSonic SSR-450RM 450W

CORSAIR CX500M 500W

SeaSonic M12II 520

CORSAIR CX600M 600W

so out of those what would you choose or would you recommend something else..i prefer modular