I'm going to disagree I'm afraid!
We had 6 small rikkis and 1 small airflow. I HATE velcro. I hate the noise it makes in the middle of the night and I hate that stiff panel on the front that you get with velcro. I also found it hard to get the velcro adjusted so it wouldn't rub. The airflows do look a bit bulkier than the rikkis though.
I was very glad when we moved to mediums at 4 weeks as they are all airflows.