This is the first time in a long time that I can't decide which program is worse between MileageMinus and SkyPesos. I stopped accumulating SkyPesos a long time ago (so I don't have many DL miles), but I didn't stop accumulating UA miles until about a year ago so I still sit on a pile of UA miles. I tried to burn those miles but I didn't really want to spend 400k+ miles on a single ticket because there's a floor to how low their values can go (about 1 penny/mile for domestic UA flights).
Even though I haven't found much use for UA miles this year (other than for some intra-Japan flights on NH), I've been booking award reservations using UA miles as my backup plans, taking advantage of the ease with which to cancel such reservations. However, I've almost always ended up cancelling those reservations, as I almost inevitably found better and/or cheaper alternatives.