I got mine for my birthday 2 years ago, fell in love and have been using them ever since. They don't have 17 and 19 so I got Addis for that. I took them on a trip to Vegas (from Boston) and didn't have any problem getting them on the plane either. The plastic doesn't bother me and the tips are great like everyone else has said. I have even called them and got more tips and cords because I tend to have a few different WIPs
and get impatient. You can order from them directly and the women that answer the phone are really nice. I asked if they'd ever make the bigger tips and she told me it was really expensive to make the molds that make the needles. The molds cost something like $50,000 and they couldn't do it just yet. Maybe in the future but she didn't know when. I've never used them as straights. If you get them, enjoy!