As I debate preamps and/or DI's with myself, this from an article taking about DI's and the Radial website which has lots of useful information on DI's...
"The question is, how much should you spend on YOURS? Well, as you may have also noticed, the guys over at Radial Engineering seem to have all the answers when it comes to direct boxes…
And it just so happens they have an answer this question as well. According to their 5:1 Rule, they say that for every 5 dollars you spent on your instrument, you should invest 1 dollar on your direct box…Meaning a 1000 dollar guitar, would warrant using a 200 dollar direct box. Makes sense, right? Now we know."
So my $2,500 - $2,800 basses require a $500+ DI.
Now you'll be able to sleep!