I have considered ordering a humphries they are well built... Even tho i build cookers right now i have not had a desire to build a vertical insulated cabinet.. Although in the new year we will be offering a vertical offset... Sorta like lone star... With several options... My concern with the vertical reverse flows... (And i am not knocking anyone) if the firebox is anything less than 1/4 inch thick... At some point you have got to replace that area in my opinion... Then you have opened a can of worms... The reason i say this is... I have been approached with one that had burnt out or rusted thru... And i told the guy... Brother you are looking at a grand for me to fix it... It woul be a lot of work... Again i am not knocking anyone.. Humphries ... Is a great cooker.. So is pitmaker... Anything less than 1/4 in the firebox area would concern me.... Troy i am sure you will love that cooker... And i have no idea what the firebox area is made of...