I think one thing that is coming up is that if you have multiple pressing stations, ie. one right by your machine to press as you piece, and one where you do the bigger pressing (fabric, sections, completed tops), you may be best served by two different irons.
At machine side I really only need some heat and some steam, and a lot of dexterity, so a cordless works well, even if it is a bit lacklustre in the heat and/or steam department. Although I have found my Panasonic quite hot...they must vary by model number.
But at my big pressing table I do need not only an iron with a larger soleplate, but all the heat and steam possible. There, a corded iron is not a problem...I have plenty of room and the cord is not in the way.