We own a 03 SeeYa, first "Moisheh" you are blowing smoke again. The basement air which is installed in other 40 Ft units will keep you cool even in 100 degree weather. We have gone as high as 110. As long as you do your maintenance on the basement air. The main issue is again maintenance, cleaning coils etc. No Alfa to date has ever been hit with delamination, for blister some units were hit and others were not. The cause was Crane Composite material, which is still install on units this day. Do other units have blisters yes. I dare say, we have had ours since 06. No other unit on the market has higher ceiling or as many windows. Which makes the unit very bright inside. What is the biggest drawback that people talk about? Who knows. There are 2 group sites on Yahoo. If you PM me I will get you the sites. Many "C" own Alfa's I just met another one in Q, who has owned his rig for about 1 year. We would rather live in a unit which is bright and airy inside Vs a 4 slide unit with small windows.
By the way, Alfa is having a rally, with over 120 unit owners attending in April.