I have used BMF for years & love it. It gives my models a much more realistic look. Easy to put on. There really are no cons.
"Nothing else compares"
nscrfns (Killeen, TX)
I've used it in all the normal ways but my favorite applications is for masking aircraft canopies. Lay a piece a little larger than the canopy window. Burnish it down well with Tamiya medium round pointed cotton buds. Trim with a NEW hobby blade or scalpel as close to the canopy framework as possible. After painting use a round toothpick sanded to a chisel point to gently lift a corner or edge and peel off with tweezers. If paint is heavy (like many clear coats) it may be necessary to trim next to the framework with a hobby blade or scalpel before trying to remove to avoid lifting paint. Use several overlapping strips on bubble canopies. It is only .0005 thick so handle with care and practice, practice, practice. You will never go back to masking canopies with anything else. Residual sticky can be removed with WD40 or Goo Gone on a cotton bud followed by vinegar & water solution (ratio isn't critical) and soft cloth for cleaning glasses.
"Bare Metal Foil Ultra Brite"
frankeva (Milwaukee, WI)
I have used Bare Metal Foil Ultra Brite for quite a while now, and when it recently became difficult to find, I tried EZ Chrome. Needless to say, that product is second to Bare Metal Foil Ultra Brite, which is still the best because it is so thin, it just conforms to details much better.