I've been meaning to pick up the Costco low-profile jack for some time. I've used it at a buddy's shop many times and it's solid. Plus, you can't beat the Costco guarantee. I'm sure they'll gladly swap it out if you pick out a lemon that got thrashed in transit. I only wish Sears would take back the two Crapsmen jacks that failed in short order.
2013 Mineral White e92 M3 DCT ZCP
2012 Bluefire S1kRR Race ABS QS HG
2008 Sparkling Graphite e90 M3 6spd XXX