Firstly, the case.
All Thomann cases are always really well made and the same applies to these ones.
The ply is thick and strong and metal work is of the highest quality.
The 8 par case can get heavy once you have 8 cans in the box and no handles at the side however, pop it on a wheel board or a hand from your roadie and all is fine.
The Par cans are second to none, well made, (they come with EU plugs) so a change will need to be made to IEC or 13amp if you are in the UK.
We own 48 of them, and never had a problem, the price is excellent and the case is well worth buying to protect your investment.