There are plenty of Rec Tec owners out there who do not use smoke tubes.
Furthermore, it's been my experience that even smoke tubes do not rival the smoke flavor that is had from my WSMs.
Something about smoke coming from off of burning pellets vs burning lump charcoal or wood, which makes pellet smoke lighter in flavor to my taste, even if you baptize food in pellet smoke from out of a smoke tube.
The Rec Tec fan cycles depending upon set temperature vs actual temperature, and it has an Extreme Smoke setting whereby it runs at less than 200°.
It goes without saying that pellet smokers in general are going to produce a lighter smoke flavor than what the original poster is coming from and may be accustomed to. FWIW, I've never seen a MAK owner who also owns say a WSM, say that the smoke flavor produced by his pellet grill was of the same degree as that produced on his wood or charcoal burner.
But some of this, a lot of this, if not all of this, is going to come down to personal taste when it comes to smoke flavor.