I'd say an IJ would have a better temperament. I am currently keeping a male gigas, kinda aggresive, but bluffs rather than bites (i have never been bitten, except once on a feeding accident).
The only tiny thing about IJ's are (from a book i read), their bloodlines. Some people think they are one species, some other think they are a crossbreed to legalize shipping >.<
One way or another, they make excelent pets.
BTS RULE!!!!
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My "babies" :
1.0.0 Indo BTS (Tiliqua gigas gigas)
0.0.1 Rainbow skinks (Mabuya multifasciata)
0.0.3 RES (Trachemys scripta elegans)
0.0.3 Amboina box turtles (Cuora amboinensis)
1.0.0 Chinese softshell (Trionyx sinensis)
1.0.0 Asian leaf turtle (Cyclemys dentata)
1.0.0 Leopard gecko (Eublepharis macularius)
And still growing...