My church has a ESP Ltd. B-334 bass.  I've been here 8 months and know the strings have never been replaced.  I'm playing this week and was thinking they may need replacing soon.  While I took upright lessons back in the day, I don't play regularly, not in the know and we don't currently have a regular bassist to help.
 
Any suggestions on brand and model of good all-around strings for bass?
 
Thanks in advance!

You've played upright in the past, and you'll be playing church music with the ESP, so I'd suggest flatwound strings (think, the James Jamerson sound). A plus is that you'll never have to replace them.
 
I have Pyramid Gold flats (40-105) on my Fender J bass and love them. Very pricey, though.
 
http://www.stringsandbeyond.com/pyr-bass-long.html
 
You might want to check out these as an example (your ESP has a 34 inch scale):
 
https://www.ernieball.com/flatwound
 
 

Perfect, thanks for info!

fwrend
My church has a ESP Ltd. B-334 bass.  I've been here 8 months and know the strings have never been replaced.  I'm playing this week and was thinking they may need replacing soon.  

Be aware that many bass players go years without changing strings.

+1 to the flat-wound. I just put round-wounds on a bass that hadn't been changed in 15 years, and the "zing" of the round-wounds is pretty prominent (mine has active pickups so makes this issue worse). In hindsight I should have gone with flat-wounds (and actually someone brought that up but I had already changed them out before I saw that advice).

mettelus
+1 to the flat-wound. I just put round-wounds on a bass that hadn't been changed in 15 years, and the "zing" of the round-wounds is pretty prominent (mine has active pickups so makes this issue worse). In hindsight I should have gone with flat-wounds (and actually someone brought that up but I had already changed them out before I saw that advice).

Some of the hard rock and metal bass players change their roundwounds before every show. The "zing" as you call it helps the bass stand out in the live mix.
 
Problem is, the "zing" dulls after some playing. Roundwounds are cheaper, but then you're replacing them every so many hours of playing time. Good flatwounds just get better with age.

Thanks all - it may very well be that they don't need changed but thought I might and now, may just go with the more expensive flat-wound knowing they'll be good to go for the foreseeable future!

If you want a nice warm, fat, sound then flats are great. Tape wounds are also good. Daddario Chromes are quite affordable flats. Your fingers will thank you.

I say Flats might not be the best way to go if multiple players are using the bass you won't know if one of them has corrosive sweat. And personally as a sound man I would hate you. You need that piano ring or it's just "mud flaps my babe's got 'em."   I friend of mine will rot your stings after one night of playing, So he uses Elixer coated bass and his acoustic  guitar strings and they seem to last a long time for him. 
My self I just use these and change them when needed. I've gotten away with over a year if it's just studio work, but when I play in a band I change them after 8 gigs or so. I have only ever broken a bass string once and that was a long time ago.  
ANyhow these sell at under $20 a set and often go on sale. Flat wounds I think are 2x that price. They do last forever mainly because there's no place for dirt and gunk to build up. My friend use to boil his strings between gigs and he could do that for a long time until the peg winding got funky. 

 
 
ghs have a set called 'pressure wounds'. Which are like a flattened round wound, which are a ligher brighter.
 
I have ghs flats on my Jazz Bass, and am really happy with them.
 
I have ghs tapewound on my acoustic, which are fantastic for that, nice mellow sound with less fret noise. They felt like rubber bands for a few hours, then the bed in a feel lovely.
 
Check out Scott's comaparison of flat, round and tape
https://youtu.be/ifqrU1Afd0E?t=394