I came across an interesting article explaining what the boot loader does and compaires two popular boot loaders LILO and GRUB.

What utility do practically all Linux users use -- regardless of their job or expertise? A boot loader. In this article, see how a boot loader works, meet two popular loaders -- LILO (LInux LOader) and GNU GRUB (GRand Unified Boot loader) -- and review the pros and cons of each.

For the complete article go here:
http://www-128.ibm.com/developerworks/library/l-bootload.html?ca=dgr-lnxw01LILOandGRUB

I prefer the LILO but thats simply because i dealt with this one more. I just started dealing with GRUB. It seems okay and it works for me...but i can see where it is kind of dull for some people. Nice article though and I would recommend people read it.