Hi I am trying to start a t shirt business and am having problems picking a heat press. 1st should I go with a 15x15 or a 16x20. I having been leaning more towards 16x20 but want your opinion. Also what heat press is good to start with. Is it ok to go with a used one or should i go new. I like the maxx presses but have not really seen and feedback on them. Also like the his ht400. But found a stalls m/mpc16 used on ebay that caught my eye, any knowledge on this unit. Please respond soon , want to get business started asap.