Been asking myself the same question along with the Bantam thrown into the mix for awhile now. It generally comes down to what do you want durability, that's the alox cadet. Practicality, thats the compact. Or do you want the middle ground, bantam.
And if you are looking at the knives in the US the price is a lot closer, cadets were running $20-25. Compact $28-35 and I am pretty up to date on the prices. (If your not US well I don't know what the prices are, but generally I figure they still be closer in price).