Which one is better in terms of sound quality

[maxlink2600]

I am looking to buy a surround sound system for christmas, I currently have a Samsung HT-C550 that i am going to try to get working, the other two im looking at are: Sony STRDH520 7.1 Channel 3D AV Receiver, Samsung HT-E5400 5.1 Channel Smart 3D Blu-Ray Home Theater System, which of the 3 of these has the best sound quality?

Thanks

 

[americanaudiophile]

Each unit is different. The Sony is a receiver without speakers or disc player, the HT-C550 is a home theater in the box with DVD, the HT-E5400 is a home theater in a box with Bluray. If sound quality is the only criteria I would say go with the Sony so you can upgrade to good speakers more easily in the future.