"I'd never tried push fit fittings previously always favouring compression fittings. I now wonder why I hadn't converted years ago. They are so easy to fit and form a leak proof seal using the Superseal inserts. They are also permit rotation when installed, something that compression fittings don't do without leaking. They are easy to remove to and re-fit still leak free. Hopefully they will remain reliable over time. As usual Screwfix prices are better than other DIY outlets."
"These twist/lock fittings are a touch pricier than push-fit only, but have the added advantage of a stronger connection. Push the fiiting on as before and then twist the collar tight. Apart from giving a stronger connection, it also prevents the collet being accidentally released. Just as easy to use as basic plastic fittings but with that extra peace of mind! As ever they give a perfect joint quickly every time."