Soldato
Not really detailing but.. I've done the whole clay polish etc. thing with previous cars, don't really want to bother with this one, I am getting good results washing every month or so doing:
Valet Pro PH neutral snow foam
AG Pure Shampoo hand wash
Sonax BSD 50:50 with water as a drying aid
After the BSD the car looks great and water just runs off, is there anything I can add in there to get more shiny shiny?
I'm a firm believer of sticking to what works for you. Your setup is quite good because it's not a permanent solution to protecting the paint and you're just topping up the BSD as and when and this comes with some upsides.
I have Gtechniq CSU which is a long term paint sealant which is great for chemical and marring resistance, but wasn't really designed for water repellency or shine hence why the Evo toppings exist from Gtechniq. As it's long term, it does require removal of water mineral spots, iron fallout and tar every 6 months so does benefit from an acidic snow foam such as CarPro descale and a fallout remover such as Korosol.
With your solution you can remove the BSD easily enough, decon and top back up easily enough. Much easier and cheaper than having something like CSU redone.
Try Garage Therapy Three Ceramic sealant (it's a spray on sealant rather than a small bottle/applicator) as a base layer, with Garage Therapy Sigma as a detailer/drying aid/top up. I've heard that combination gives good slickness and shine.
Waxes still have a place when it comes to slickness and shine, but are more involved to apply and it's always a balance between longevity of protection vs gloss.