Douglas,
The store I worked at until a few months ago, carries Peterson Strobe tuners; I sold a few of them, and fooled around a bit with one, but I would not consider myself an expert. Having said that, I did like what I saw when I tried one, and one of my more experienced co-workers, Rik Elswit ( a former Dr. Hook & The Medicine Show bandmember, a guitar salesman extraordinaire for the last 14 years or so) swears by them. As you know, they do cost a lot of money, but their reputation is amazing & you can tune anything with them.
Personally, as Jan & Michael indicated earlier, I would probably choose either the older Korg DT models( DT1, DT2) or their newer incarnations the DTRs (DTR1000, DTR2000); those are excellent tuners that are great for stage work as well, because of their easily visible display; they also cost much less than the Peterson tuners, which might be a bit of an overkill if all you want to tune is a bass guitar.
Also , if you can find one used, you might like what i have which is a Boss TU50 chromatic tuner (now discontinued), a half rack unit with a good display that shows tuning from +/- 50% down to +/- 2%.
Valentino