[TexasSP]

Many swear by it and it supposedly runs excellent up to 5s, just has issues with 6s. Everyone I have heard from that owns one says they are butter smooth, and some say smoother than the MM/MMM. If it was me, and I only needed 4-5s capability, and the deal was awesome, I would buy it.

Just keep in mind though that all Quark warranty/repair issues has to go through Korea, that includes any communication.