I'd go with the Ibanez Soundgear lefty.
If you can't find one, I'll sell you mine, as it will be replaced with a new Sterling in a month
Seriously, for my 'ultimate' to-the-grave bass purchase, I was considering a Carvin Bunny Brunel, Fender Deluxe American Jazz, and the Sterling.
Dropped the Carvin idea, as I already own one (yes, it's as awesome as the Carvin fanboys say) but decided I didn't need two of the same brand unless I was sponsored by them -- and at one gig per month at local taverns, I doubt that will be happening soon.
Dumped the Fender, as for a lefty they only had two-three color choices, and they are a mass-produced item. I've also gathered several notes from those on the bassplayer.com forums that Fender has some QC issues -- even in their USA instruments. Figure dropping over a grand, I don't want a 'I hope it works' deal.
Ordered the Sterling b/c it has the things I wanted for in a Carvin (some control over 'customization' of the instrument, and satisfaction knowing the thing was built just for me) and a Fender (presence and recognization on stage by even non-musicians as the 'real deal').
Instrument tone, the small neck, and the wonderful people on the board helped seal the deal for me. It tis a fun place to hang out, I must say.