The alox Cadet has recently skyrocketed in popularity and I understand that it offers a lot of bang for the buck and size. However I prefer models with the combo tool in order to shave off some thickness from the regular arrangement of can opened and cap lifter on one layer. Because of this I have models like the Bantam (alox and cell), the GAK, and the Compact (which I believe to be the finest SAK out there except for the antiquated parcel hook.) That doesn't stop me from accumulating classic versions like the Pioneer and Farmer, but those don't see as much use.
In day-to-day life, though, my most used and appreciated models are the wee keychain versions (surprising nobody.) I had an alox SD Classic that I recently swapped out in favor of an alox Minichamp. This little beast does everything and more...I have used the miniscule Philipps to put together Ikea furniture, lift many a cap, peel many an orange, push back many a cuticle...and it keeps on ticking. What a great little tool.