Hi All
With the one reservation about power limits for Foundation and Intermediate license classes all of the Clansman radios except the 344 (UHF airband) and 349 (low VHF) cover at least one amateur band and can be used by a licensed radio amateur within the amateur bands that they cover - for practical purposes this means FM in the 6m (50-52MHz) and 4M (70MHz) bands for the 350, 351 and 352. A 350 (2 watt) or 351 (4 to 5 watts) should be fine for foundation users on these bands. The main catch is that on 6M the channel spacing for amateur FM is 20KHz whereas the Clansman sets have steps of 25Khz, so only 51.3, 51.4, 51.5, 51.6 and 51.7MHz are really usable within the amateur FM range. 4M is 12.5KHz spacing so every 2nd channel is useable.
You should probably (looking forward to the intermediate and full license requirements) look to get a power meter and frequency counter to independently verify the output and tuning of the sets. Most local radio clubs will also operate a "rig clinic" where you can take radios to test equipment once in a while too.
Here in East Suffolk most of the Clansman VHF users seem to settle on 51.500.
The RT353 can be used at full power by intermediate and full license holders on these bands (it is a 50 watt set) - I'm not 100% sure of the foundation license conditions as to whether one must not operate above the license limit or must not use kit capable of it - if the former is the case and you have a power meter to prove it, I would have thought any of the larger sets (320, 321 and 353) can be used on their low power settings.
On HF the RT320 and RT321 both have low power settings at 5 watts so should be useable. Their high power outputs are about 30 and 45 watts so should be covered by an intermediate license. These cover all of the amateur bands between 2 and 30MHz although because they offer upper sideband only and the amateur radio convention is to use LSB below 10MHz, they are most useful for long range contacts on 14, 18, 21 and 28MHz.
For display purposes am HF set on receive and a speaker is probably the best / most interesting thing to have, I would suggest.
My own station is a 321/322 high power setup for HF and a 353 for VHF and I do have a 352M and a 320 for mobile use.
Regards
Iain
73 de G0OZS