Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Take note of the Heat-Up Time

Hello,I haven't bought either item yet, but I want to start out with the "personal" J-2000 line. Thanks to everyone for reviewing the steamers (as it has helped me figure out which model is best for me) , and for those who wish to UPGRADE to the J-4000 (you do get more power and the extra attachments) that this commercial model has a 15-20 minute heat-up time (which is not included in the item description), while the J-2000 is ready in 2 minutes -- so the consumer version would be best for daily use (if you're on the go and always have to figure out what you're wearing for work at the last minute). The J-4000 then would be best if you don't mind waiting for the steamer to be ready, if you're going to steam several items of clothing for future use, or use it for bigger jobs most of the time.