You might find my post (about 1/3 of the way down the page) in this recent thread informative:
Cheap Hollowbody Basses?
As you might guess from my avatar, I love these basses.
One thing to consider (depending on how adaptable you are to varying specs) is that the Starfires have pretty narrow string spacing (1-1/2" nut, 17mm spacing at the bridge saddles). I find that comfortable but, if your frame of reference is, say, a P-bass (1-5/8", 19mm) you might find it cramped.
Country of origin of each of these bases (current production) if that matters to you:
JC: China (earlier ones were MIK, but those are getting harder to come by)
SFI (up til recently): Korea
SFI (current): Indonesia
SFII: Korea
Older-production SFI was made in Korea and had a single BiSonic pup at the bridge. The newer ones have a P-Bass type pup midway between the bridge and neck positions (see review in my post linked above).
Other changes on the Indo SFIs:
•scarf joint at the peghead
•no "Chesterfield" peghead inlay
•bound neck
•neck joins body @ 17th vs. 19th fret
•frets may be narrower (not sure about that)
•TOM-type bridge & "harp" tailpiece replacing Guild "harp" bridge
•HSC not included
•Less expensive