The original pulse is solid, nicely executed. That said, my go-to mech squonkers were the two I tweaked with new 510 connectors and contacts.
The new pulse 80w has become my all day mod, switching back to the mechs only for really grungy conditions (salt water or heavy rain), since with a mech I can rinse the whole unit out. There's a firmware update coming in June which will likely do the +/- button lock option, so power level can't be accidentally changed.
For rda, the Dead Rabbit SQ has been an excellent flavor topper. I had an SXK Haku Phenom clone waiting for me when I got back, stellar for the price. The other squonk friendly RDA I've had my eye on is the Recurve, recently released with great reviews, though between the SQ and the Haku I really don't have a pressing desire to pick up anther topper right now.