The gold oozora is pretty tacky, with a durable ken (maybe glue the tip though). It is my favourite lunar kendama (which gets even better with play).
Plus, every collection needs an oozora ;-)
In addition if you want to go sticky, it would be worth it to look into the Krom Autumn (as Shalafi suggested) and maybe the Noia? Also, the previous range of kendamausa Pro models had rubberized paint which is very sticky. However, I'm not sure if the new line has the same thing since they are very different between pro players. The Jake Wiens one looks pretty rubberized. Anyone who can back this up?
However, if you're used to Sweets and its Atack, maybe best to stay with Sweets. I think the new fade F3's are also very sticky (I heard people saying they could do a solar eclipse, where tama and ken are practically stuck together, right out of the box). So that would be a good guess. If you're located in Europe, check out kendama.cz for Sweets kendamas. They offer a pretty nice range at the moment.