Can I ask how confident you all are with those plastic clips that many collars have on them ? Similar to the ones they use on backpacks etc etc. Have you ever had them break or slip undone ? I love nylon collars but I am always a bit paranoid those male/female clips are going to split or break under pressure at a bad moment as opposed to buckle style collars. Any comments or feedback ?
I have a fair number of collars with plastic buckles currently, and have had a pretty large number of them over the years. I can't say I've ever had a problem with them. I've certainly never broken one, nor have I had one come unsnapped.
That said, I would not use them on a dog that pulls a lot, or a dog that may suddenly lunge after another animal or at a person or anything like that.
I have one now that I use primarily as a tag collar. It has no purpose other than to hold a tag, and I usually have it on Ronja when we are walking off-lead on our property, or when we're going to/from events. At a lot of events, she just wears a slip collar or a collar with a metal buckle, and no tags. Sometimes I have the tag collar on and a simple slip collar. Just depends on what I feel like that day and what we're doing.
One collar I have that I like a lot has a plastic buckle, BUT the way it's designed, it has two D rings to clip the lead to, and if the dog were to lunge, the weight and pressure would be on the metal D-rings and the collar material, NOT the plastic buckle. It's a really good design and it's disappointing that not more companies make them.
It's this one, from BodyGlove (but ours is a different color) -
Body Glove | Store
The D-ring on the left (in the pictures on the website) comes over the buckle and the lead snaps to both D rings at the same time. No stress on the buckle at all!
If you need a really heavy-duty collar with a nice big metal closure, might I recommend this one -
Nylon ID Service Collar with Metal Buckle
I have one of those and it's really nice. Not really "one size fits all", though. At least not for my little Malinois.