I am looking into a Premium Ibanez SR Bass and can get the Aguilar pickup model for the same price as the Nordstrand model I like, and the basses seem basically identical aside from the pickups. I am unclear on something and because I live in Puerto Rico, the only high end basses stores really carry are Fender and the ocasional Yamaha. I more or less understand the difference in the noise as one has single coils and the other has hum buckers, but I am unclear on 2 things. 1) Is EQ bypass switch the same as an active/passive switch? Can I use them with no battery? 2) Do the single coils hum? I have tried high end pickups and custom shop pickups that have a violent hum simply because they are single coil (Might have had to do with mediocre active electronics job), but I've also tried Fender Jazz Basses where unless the outlet is problematic there is 0 hum when singling out either pickup, so I am unclear on what is making such drastic differences in the hum and don't know how the active eq would affect that. If anyone has experience with the single coils constantly humming I will probably go Aguilar but in terms of sound the single coils do seem a little better, since I have been recording a lot straight into my interface I can't stand limiting myself to 1 pickup blend setting simply to avoid hum. For reference, these are the models I am comparing: Ibanez Premium SR2405W Bass Guitar - Caribbean Green Low Gloss Ibanez Premium SR1605B Bass Guitar - Caribbean Shoreline Flat If there are any other significant differences between these models that you think I should consider feel free to mention it as I won't make the purchase until I sell some of the basses I currently have.