Hello all, I just started using a straight razor yesterday. I had been interested in getting in to straights, but then I found out that my dad had tried them out a couple of decades ago and found that he didn't like them. So he gave me his old razors. The blades do hit the handles when closing sometimes, and the handles appear to be slightly warped, but the blades seem to be high quality, and the brand was listed among the "good razors" section here. So far I'm pretty impressed with straights (I did cut myself a few times, but I'm learning), and I think I'll be switching over to them from now on. My question is, how do I know that the razors are sharp enough? I keep reading about the difference between factory edges and "shave ready" razors, but what indicators can I use to test sharpness? I sharpened these with Edgepro stones and tapes (a sharpening system I use to put polished edges on pocket knives), and they seem pretty damn sharp. But I'd like to hear what a true enthusiast considers to be sharp enough. Thanks in advance!

A pic of the razors I received: