With my basses I tend to take the J when I want to cut through more and the 5 string P/J with flats when I want to hold it down in the pocket. YMMV as usual but that been my experience. If you can afford both go for it.
Whenever I see one of these threads, I wonder if Van Gogh used straight or angled brushes.
Owning 5 p basses is redundant!
I'm not sure which direction I would go if I were in your shoes.
I'm with you on flats and effects, though. A lot of the "character" of many effects comes through in the top end that roundwounds provide.
I posted a couple months back about how much I've been loving my P bass in the band setting. That hasn't changed. However, I'm wondering what people think about the P vs J thing in different scenarios.
For example, I play weekly with a band that has a lead guitar, rhythm/acoustic guitar, a keyboardist, drummer and singer. I also play play weekly with another band that is just a guitarist, a drummer and a singer. And I've been using the P for both for a couple months now.
I love the P in the band with more members. I feel like it hits the fundamentals needed for the setting. But I'm a little less in love with the P in the three piece band. Especially when the guitarist is switching up his pedal sounds to transition songs, or when the guitar is playing a lead/solo and the bass and drums are holding it down. (As opposed to bass, drums, rhythm guitar and keys holding it down.) I personally think a J might sound a little better in that situation. I'm going to experiment a bit, but what does TB say?
Why do you guys like/dislike a P for a small band setting?
Also, I'm looking at expanding my effects usage in the three-piece band. I just don't dig the effects I have with a P bass and flats, as much as I do with a good old J and rounds. We'll see...
I might just end up rotating them
Just my experience - I've found that a thinner/twangier sound works better for 3 piece bands. It blends in with the guitar better. A super phat low end can eat up a single guitar, especially if you have a guy with a Telecaster or other thin sounding axe.
So my vote is Jazz bass ......... BUT people can surely point to 100 trios with P-basses.