First of all, the advice.
Two final thoughts:
01. If you want definitely want a series, save up for a series. Otherwise you won't be satisfied, and you'll have the headache of moving one bass for another one. When buying, cash is king.
02. If you're looking for something to tide you over, buy the Rogue. However, I think you should try and play the bass first - or at least get a trial period. I've had mixed experiences by buying without playing.
That being expressed, here are some of my thought about my newly acquired Rogue.
I just picked up a Rogue, and I really like it. It is a very comfortable bass, especially if you're used to Fender-y shapes. You can wear it vintage style, so the first fret is close to your body, and quickly shift it for ease of playing up the neck. I lucked out, and it's a svelte 8.5lbs.
I also like the electronics. I have a frankenbass with the East Meets West setup, which I find very flexible. Moving to the Rogue, I wasn't sure how I was going to like the quick change T/B, but I think I might actually prefer them to the pots.
I've never played a Series, but I would really like the opportunity (any Chicagoans out there, hint hint). So, my experience lies is in the non-series area. I have the Rogue, an Epic, and two jazz basses with Alembic elctronics (one J/J, the other MXY/Fatboy).
At first I liked the T/B controls of the Epic over the filter, but having spent time around the filter, I'm starting to prefer it for tone shaping.
I suppose what I'm saying is that the Rogue is crazy versatile, and I am quite happy with it. Between the electronics and the amazing construction, the Rogue is, hands down, the finest instrument I've owned.
Joe