Thanks for all the replies, they have been of great help. Locally the biggest supplier is BRM, however from my impression the supplier isn’t very reliable and I don’t think I’ll get much support from them. They also run their own team which I don’t plan on joining, and I find it hard to believe that I will be able to tune the chassis better than the supplier themselves, given their experience and direct communication with the factory, so I was thinking that I’ll have better chances if I branch out with something different?
From my research, the CRG has the Sniper system going for it, as well as the adjustable wheelbase (not to mention that it looks better in my opinion, although that is not the most important factor for me of course). However as suggested, the OTK seems to have much better success worldwide with TAG classes, and online tuning help is much easier to find which might be helpful given the lack of local support. From what I’ve heard locally, the CRG tends to struggle when the track becomes very grippy on a race weekend, while the Tony Kart excels in these conditions; not sure if anyone else has observed this happening.
I will be tuning the kart myself as I have been doing for the last couple of years, so a wide tuning window is preferable over a chassis that is fast only with a particular setup (such as my current chassis). Seems like the Tony Kart is the better option for this? Other important aspects for me are the brake feel, although I understand that this can vary from person to person, as well as chassis longevity.