Back in March of last year I posted the same question. The 5-strings version of his bass was not out yet. Only two people responded and neither heard of the bass before. The bass is very new. I almost got the Jazz 24, but decided to go with Ibanez.
I have listen to the Jazz 24 being played by different base players and one was an instructor who was very impress with the sound. The store I was at happen to have two on the wall. I pulled one down and it sound really bad. Ask them if they could tune it, they couldn't tune it and put it back up on the wall. I pulled the 2nd one down which sound better, but the knobs where broken. I have seen the knobs on this bass broken in other stores. At first you think it was mishandle by a customer. But, having seen this a few times, you begin thinking it's not built as well as it sounds. A couple of times I have seen the price mark down on the bass because the customer returned it. All are signs that went against the Jazz 24. So, I decided to go with something that has been around for a while. Plus, in the year and a half that I been hanging out at music stores, I haven't seen one ibanez returned or with broken knobs.
If you are new to bass playing as I am, go with something that been around for a while that will fit your buget. One good sign, store is having a hard time keeping them in stock.
Good luck ....