One of the clicker bot in my team, called everyone noob from the first second until the last. That is solid indicator of being a retard, so I checked out his profile after battle. I did't even expect to find such a treasure:
I have to tip my hat off. This is remarkable in it's own category.
Guys dont waste bonds on anything else that isn't ivstab or the FF ability (or to get 6th sense while you are traing a new crew). Ivents boost is irrelevant compared to normal vents and same goes for irammer which is just a worse ivents. If you already have your favourite tank with ivstab dont buy another piece of improved equipment for it, but buy another ivstab for another tank you play a lot (example a tier 8 premium or a tier X for CW).
Also i'd suggest you putting them on tanks with bad/average handling (like a bat/defender/5a ect) rather than on tanks with great handling (russian mediums) because the improvement will be bigger and because they need it more.