Pros: Wide soundstage, nice highs and lows, very lasting build.
Cons: Oxidation of cable, could sound a bit cold and can use a bit more bass.
Solid construction for earpieces. However after close to 2 years of usage the canal duct which the silicon sleeve sits on came loose from the main earpiece, not totally but loose enough to affect the quality of sound, especially bass. Wire was durable, however it oxidizes easily, and the oxide seeps into the main earpiece from the memory wire, which I think may compromise the integrity of earpiece in long run. Lots of micro phonics though.
One of the more neutral iem I have came across. The bass is tight, controlled, not boomy and goes right till the end. The highs are not overly sibilant, just right for me. When compared to UM2 and UE tf10, it lacks an edge around the 200hz region. Could be the cause for bass being not boomy. It will definitely come as a surprise to someone new to iem due to lack of presence of the so-called 'bass' they are accustomed to. However this also result in a very detailed and transparent sound, especially from mid frequency to high frequency region. Instrument separation is excellent, and the best part here: sound stage. It has an unbelievably wide sound stage, very much more than tf10 and UM2. The music sounded very much alive as compared to UM2. In short the order of widest sound stage will be SCL5 >> tf10 > UM2.
Feels great after getting used to it. Isolation is top-notch. More comfortable than UE tf10. Accessories wise was quite standard, comes with a few pairs of silicon sleeves with different sizes and there was yellow sponge form, the olives and triple flange as well. A hard case, plane adapter (if I never remember wrongly) and a wax remover for the earpiece completes the set.
Hope this helps!