I did not read all the replies, but......a great feature you should get is the ability to raise or lower the charcoal grate. Or somehow, raise or lower the grill that holds the goodies.
If it is just the two of you, we like a "hibachi" type, with three slots for adjusting the racks closer to the coals or further away. If company is coming, store another seasoned hibachi away for the occasion. You will need some insulation between the table and hibachi, so the table does not warp or whatever.