I like the way my Schecter Studio-6 looked, played, and sustained when I first bought it.
But, I had the same electronic issue. Luckily I got a great deal and had some cash to upgrade. I installed an Aguilar OBP-3 Preamp and replaced the EMG-HZs with EMG-DCs.
Now I get tons of compliemnts from the crowd, other musicians, and soundguys. I only have around $650 into it and it competes with basses that are 1000-1200.
I like having the push/pull mid freq switch. It keeps it versatile.
If I were you, I'd change the pre before the pups, but it's easiest to do it all at once.
On my myspace, you can listen to a recording of Folsom Prison that it's used on.
-Scott
www.myspace.com/scottpetersenmusic