Portable Freezers???

[bumpersbird]

Anyboby have one of these Portable Freezers?
I would like to get one but there are several choices.
They have two or three types of systems for cooling. Sizes,
practicallity, do you really use them and reliability.
I have found out that the two common types of compressors the swing
compressor which can operate up to 30 degrees off level and the sealed
Danfoss compressors which are very good but not a robust as the swing
type.
Can they really keep stuff frozen?
I would like to hear from the group about any experiance with these
freezers.
Kurt Horvath
95 PT-42 WLWB
10ac