Never heard of a raiju. Goggle images shows a nice rda. I like the posi T-post but the air holes look a little small. For me anyway as I like a really airy draw for lung hits.
The holes could def be a little bigger but its not bad. The size of each air hole is 2mm by 3mm, there kinda oval shaped. But def not as airy as the tobh v2.5. Good flavor though.







