Scott, I always cringe a little when people say their indoor cats have little chance of escaping.
What if a stranger or unfamiliar friend comes to your home and leaves a door slightly ajar?
What if there is a disaster of some kind (e.g., earthquake or fire) and a window or door gets rattled open?
What if someone breaks in?
What if your cat simply gets it into their head to bolt for the door while you're coming inside with a bag of heavy groceries or something?
The point is, not even an indoor cat with the most careful of owner has "little" chance of escaping. There's no excuse not to collar/ID and microchip a cat.
I also don't really see the point of bringing up the subject of your uncollared cat on a thread asking about collar brand opinions, but why not ;p
Now, onto an ACTUAL reply on relevant subject matter!
Minikin, I've been using Rogz brand collars on Win for a couple of years now, and they're fantastic. The thing I like best about them is that their break-away buckle has different "strength" settings, so for kittens, you set the "lock" to the weakest setting. Once kitty grows up, you can switch it to medium. If your kitty gets hulkingly huge, you can set it to the strongest setting.
Rogz | Use it or lose it
I've currently got the reflective orange one on Win. I like it because it's a leather-esque texture, and not a cloth/woven texture, so it doesn't get dirty and it doesn't fray.
I've never had her lose a Rogz collar yet!
Also, as a secondary note, if you're looking for a good, lightweight tag, I recommend Lucky Pet tags:
LuckyPet Pet Tags and Pet Stuff!
They're plastic and they velcro straight onto the collar, so your cat won't have a awkward tag hanging down their chest. They're durable - mine have lasted for a few years so far. What I do is velcro the tag onto the collar, and then I sew
the velcro into place so even if the velcro itself loses its grip/cohesion, my stitches will keep the tag on the collar! :} Theoretically, glue could also work for this, if one is unfamiliar with a needle ;}
I've also used these more conventional tags:
Aluminum Xtra Small Pet ID Tags - $5.99 : Rossi Pet Tags, Pet ID Tags - Dog Tag and Cat Tag - and Tack & Saddle Plates - Custom Engraved
I get the circular-shaped ones. They're REALLY tiny and super lightweight, so they don't bother Win at all. I've got one on her collar right now with the Medical Alert logo with the words "Needs Daily Medication!" so if she gets lost and anyone finds her, they won't be tempted to keep her since she's a high-needs sick kitty ;}