Joel's right,
Just play them, and as many as possible. There seem to be a lot of opinions about how to set up the bass for various styles of play, and there is a lot to be said for that. I'm sayin' for instance, slap guys will often have a very flat bridge and fingerboard, as where arcos-ists need a healthy curve so as to get the bow on one string at a time. Also, few orchestronauts have flames painted on their instruments.
Also, there seems to be a debate about the Romberg (you know, that continental divide between E and A that runs down the length of the FB) being out of style these days. However, some still contend that it's needed to give the fat string plenty of room when bowed vibrations get really cooking.
My point is this, play lots of basses with different strings and set ups, and play them the way you intend to play your bass (duh). And if you find that you like bowing on a flat bridge, then do it! Dig, I'm just saying from my own humble experience there is no better way to do it than to try it yourself and go with what happens to work for you.
Here are a couple of things I found can be big variables that can seriously change the sound / playability of which I was not initially aware.
The bow - a craptastic bass can sound reasonable with a good bow, and a crumby bow can wreck good tone. I went to Violins, etc in Austin and played a bass with good arco tone they had there using a mess of different sticks. I finally went with brazilwood for $165. If you don't already have a solid bow, people say good things about the Upton bass $100 budget bow.
http://www.uptonbass.com/Double-Bass-Bows/
So that's one variable it helps to have consistentiated. Also I like Pop's rosin.
Also, an adjustable bridge is good to allow you to lower the action for jazz and pizz, and raise the action for arco if needed. Furthermore, dry air will lower the action so you may need to make seasonal adjustments anyway.
Finally, about the price range. I found that solid tops really do have a much fuller arco tone than the laminates, and cost more accordingly. But just because you choose to go solid, doesn't mean you have to pay an arm and a leg more.
Good luck friend.