I have one that is kind of flat and folds, it is great as the little blade is smaller and easy to get under small stitches. It is my favorite and I actually have 2 of them.:)

I have one ole timer from the 60's that still does its job. Bought one with a round handle. Eaiser to handle with my hands now. I also have one that tip broke off and DH sharpened it nice and sharp for tight stitches. And have one from Wally. All work well. Razor blades for the big jobs.

I have a couple of the sort of inexpensive ones and they work fine. The little ball I never gave much thought to but thought it was to prevent me from going to far into the fabric. What do I know? :|

I have seven---that's right, I said seven, seam rippers..I have no idea where they all came from, I know I bought 2 bit the rest I think came as freebies at shop hops---as did the 17 measuring tapes I own

Do you mean Harbor Freight?

I was thinking the same thing. Kind of looks like a surgical instrument.

I love the ripper/clipper that I purchased at shoppersrule.com, They clip thread ends and the point is bent slightly so that it is wonderful for getting under those tight threads. I have one by each machine and even use them on my long arm (when I have to rip). I know Anchor makes them and shoppersrule has another brand as well. One of them is listed as "make an offer" and I know $5.25 is accepted.

I use the one from Walmart.

I don't know if they even make my favorite one anymore. It is an olfa cutter, the blades are 1/3 of a circle, and can be reversed once one side gets dull. I still have 1 replacement pack left, but once that is gone, I may be shopping for a new one. I have the clover one, and it works good, but really don't like using it.

I buy cheap ones and have lots of them. I have them tucked everywhere, so I'm never without one. All of my sewing totes, purse, next to my hand sewing chair, etc.