Never heard of them but if you aren't a rich person that bike might be for a rich person, I would get something with Bosch, it will be initially more costly but will last a lot longer and have really excellent long lasting support (typically they try to support their products 11-16 years after they stop production) The only Bosch product I cannot really get parts and good support for is their Gen1 products which didn't come to the U.S. aside from people bringing them with them when they moved. However those are pretty old now but I can still get support and buy parts for the gen2 motors from bikes from 7 years ago and there are tons of those still on the road. Bosch support is truly excellent because any shop with a QBP account can get parts and support quite easily without much knowledge. If you call Bosch for help they will walk you through it all and it is frustrating to us because we know all the stuff and sometimes more than their level 2 folks but in the end it is great because they make sure of everything and a really careful partially because they have high standards but also because they want to know the issue and try and prevent it. Plus they are a well known company who make motors and batteries for all sorts of things so this is not really a big deal for them but they do take it quite seriously and I have ridden a lot of different e-bikes over the years and Bosch was the one I chose for my personal bike and a co-worker is building up an e-bike and he also went Bosch because we see them all daily and we know what is good and what is OK and what is bad and Bosch is good. We can have our pick from a lot of different bikes and motors from Shimano and Brose and Specialized and others and Bosch is the way.
TmMc said it really well.