JBuds J4 vs Shure SE215

J4 cables are reinforced with kevlar to resist breakage. The flat design helps prevent kinks, as the cable coils rather than twisting or bunching. Also, tough and flexible reinforced exoskeletons protect the cable connections and joints.

JBuds J4 components are protected by rigid aluminum cylinders, capped with aluminum grills.

Overall sound is quite bassy, with low end that is very punchy and fast, so it does not muddy up the music. The mids are slightly recessed, though the vocals can still be quite clearly heard as the bass does not overpower it. Highs on the other hand sound pretty good as they are clear and detailed without getting harsh.

With the J4, you get an EVA foam carrying case for even more protection and convenience when bringing these on the go. Also, there are two sets of silicone ear tips: 3 pairs of single flange tips as well as 3 pairs of double flange tips. A shirt clip is also included.

Bass is emphasized so there is a good bit of thump while staying controlled. Mids are rich, highs avoid sibilance, though they're a bit rolled off.
Soundstage is okay--instruments are separated out enough for them to not sound like they're all coming from the same place, but it's not particularly wide.

The memory foam eartips mold to your ear to provide amazing sound isolation, though there's a bit of a learning curve to using them. You have to press them together before putting them in and then allow them to expand in your ear. Once expanded they will take the shape of your ear and that way provide excellent noise isolation.

The earphones also come with silicon tips which are easier to use than the foam ones and also last longer.

The SE215 earphones have a negative profile, optimized nozzle angle, over-ear fit and memory eartips that ensure the earphones stay in place comfortably regardless of situation. You can even lie on your side with them.

6 types of plugs (silicon/ foam: S/M/L).

SE215 earbuds use tough plastic earpiece shells, have a robust kevlar-reinforced cable, a sturdy Y-splitter that's difficult to bend and an L-shaped plug that adds additional strain relief. They won't break if you snag them, drop them or sit on them. They're also completely sweat proof so you can use them while working out without having to worry about damaging them. They're durable enough for professional stage use for which they were specifically designed for.

The SE215's 6.4-ft. cable is very thick, and further reinforced at the left/right split point. Reviews confirm the durability benefits of its heavy-duty design. If it ever does break, the cable is built to detach safely from the earpieces, allowing replacement.

The optimized angle of the earbuds, over-ear fit, and memory ear tips ensure that the earphones stay in place comfortably regardless of situation. These are also sweat-proof, so they're a great option for active use.

Shure provides a warranty against defects in materials or manufacturing for two years.