I can not really find any reasons for ordering the scirocco 20.1 over the 30.1 other than a lower price and lower weight to deal with. Am I missing something here. The 30.1 has less clearance requirements so the 20.1 and 30.1 will fit in the same size space. Also seems like on low they each put out the same btu's so seems like any issue of overcooking with the 30.1 are moot. Am I missing something here. Are there any other reasons someone might order a 20.1 over a 30.1.