I have a Resmed Airsense 10 autoset and it works great. I would definitely suggest one with a humidifier. I would also suggest trying a new type of mask if the original one is uncomfortable. I started with a nasal mask and now use the nasal pillows. There are many options.

For travel I out the cpap in its bag and place that in my suitcase. You see a lot of people with cpap bags as carry ins at the airport too.