You're trying to compare apples and oranges. The TenTec and K3 would be nice mobile, but they're really overkill in so many ways. I personally, with over 35 years of mobile under my belt, wouldn't consider either of them.
The TS-480Hx is a poor man's amplifier, and a decent radio. It does 6, but it doesn't do VHF/UHF. It's a little large for me, but not as large as a K3.
The IC-7000 does 160 through 70 cm. It is a consummate mobile radio, but it cannot be compared to any base radios. It is very small, and the main part, like the 480, can be tucked out of the way. Both, however, require very good ventilation around them.
Either of the latter two would be fine, depending on what it is you're looking for.
Go to my web site, and look under Miniature Radios.
Alan, KØBG
www.k0bg.com