I have tried several pairs, including the ProSlims, and really don't notice a lot of difference between them at the indoor ranges. The best bang for the buck, imo, is the line carried by Dick's Sporting Goods, but I do prefer my Peltors for their comfort, noise attenuation and hearing capability. I don't know that I'd trade them for anything.
What I looked for when shopping was simple comfort. Did they fit snug, but not crushing? Plenty of room for the ear without any pinching? With a hat on?
I figured I could double-up with plugs and muffs, but found the plugs completely unnecessary even when shooting indoors.
Can I hear conversations when other's are shooting around me? Yup. All day long. The only time I get any clipping of words is when the shooter is very close, and I don't mind that.
Best part is that I can hear conversations really really well when there isn't any shooting around the range, and you sometimes get to hear some really juicy whispers!!
