I haven't owned one but have cometed against Lang 84 and Lang 60 models. HomeBBQ.com (Kevin) used an 84 for several years with great success. I was thinking of buying one but never could get an answer by phone or email - so I ordered my Kingfisher.
The reverse flow "technology" is sound.
Southern Brethren BBQ Competition Team
"It's all about getting paid!" - Myron Mixon
"I love being hated in my hometown!" - David Hair
KingFisher Gator Rotisserie cooker, WSM, Stainless 5 burner with IR gas grill, Turkey Fryer, Weber JD Commemorative grill, slightly used Bandera chamber for future use as a cold smoker, Masterbuilt 40" insulated ELECTRIC smoker