These Etymotics are in your budget and will fit in most any ear. Given their thin tubular shape they go in deep and block external sound extremely well – they may even penetrate clean through your brain to the other ear. Based on commentary from @Torq and others I bought a set for travel (see the other thread).
From my (mostly lower end) IEM experience, I’d avoid Noble’s universal products. They have thick and short ear shafts that are often challenging to use.