Mt Whitney Zone Forums General Discussion lightweight bear canister or equivalent

i'm looking for a bear cannister that can handle about 3-4 days worth of food for a solo hiker and is certified for use in SEKI/Inyo. so far the available choices seem to be:

UDAP No Fed Bear (455 cu in, 2.4 lbs, 8"D x 10"H, $70)
Bare Boxer Contender 101 (275 cu in, 1.6 lbs, 7.4"D x 8"H, $60)
Lighter1 Lil Sami (300 cu in, 1.3 lbs, 7"D x 9"H, $95)
Bearikade Scout (500 cu in, 1.75 lbs, 9"D x 8"H, $255)
Bear Vault 450 (440 cu in, 2.1 lbs, 8.7"D x 8.3"H, $70)

i'm worried the Lil Sami and Contender might be a little small to fit all the food and toiletries i'd need for a 4-day trip. the Scout is just way too expensive, and it's not on the SEKI approved list (though the Weekender and Expedition are, so it's probably ok). ruled out the BV450 because i don't like the locking mechanism, and because of reports of areas where bears have learned to defeat or chew through them.

that leaves the UDAP which is what i'm leaning towards for now. Does anyone have experience with any of these cannisters and can offer recommendations?