I have the Gladen speakers. Running off a Sony HU and Kenwood amp. Also have a powered sub.
To be frank, I was disappointed with the Gladen speakers. They appear to be cheaply made - quite lightweight, baskets are pressed steel, magnets are small. If I was doing it again I wouldn't buy them. Seems to me that they are an old design being sold for premium money. Also mine were not plug and play - I had to mess about with the wiring to get them to work.
In terms of sound quality - I find them a bit harsh. Bass is there, but as I've got a sub, I have crossed them over to not deal with sub bass. Imaging is poor, but that may be the design of the car and where the speakers are located.