The Corvette $$ Bolt on neck is thicker than your average Ibanez, but it isn't baseball bat-like. Still pretty fast, and I have fairly small hands. I'll never go back to Ibanez style necks after my $$. Incredible bass for the money
Haven't tried a Streamer, but they tend to be more expensive and use Maple necks (Unless you go Jazzman). I believe the neck size is similar, but you won't get any of the $$'s versatility. And those dual humbuckers look f@cking cool