Tom, Johnb300m had a GE profile PDT720 for only 2.5 years before the racks began deteriorating as well as the pump begin to leak.  He ended up replacing it with a KA KDTE304 and was much happier with it.  He'd been a huge supported of GE dishwashers for years.  He replaced the GE in May 2018.  

Best current overall DW in the US are the Maytag models, if you want greater quietness and state of the art features get a KA or JA, but you are likely to have more problems with the high end KAs and JAs.

I would skip the Bosch machines for many reasons, harder to work on and install, they are smaller than US DWs and look funny with the gaps on either side, Very few appliance repair companies will work on them, make sure whoever you use for repairs likes working on them, They dry poorly if that is important to you and their overall construction is much more flimsy, they are not a great choice unless you are very careful with appliances.

John L.

I would definitely consider a Bosch.  I've had two and have had trouble free service from both.  I installed the one in my current house and it was extremely easy.  They clean well, are quiet, and have lots of loading flexibility.