A HTIB will never replace a true setup, that's a given. However, it is way better than just the TV speaker, that's for sure.
I don't know the model you are looking for but most HTIB are not meant to be driven in a big room. Don't expect the ceiling to crack under the sound pressure created by your setup. Expect to hear surround sound as close as you can expect from such a system.
I have a HTIB in my living room. It is a JVC and it does what it is supposed to do. It sounds nice but I can hear the difference in my theatre compared to a 1300 watt amp.
Good luck!
I don't know the model you are looking for but most HTIB are not meant to be driven in a big room. Don't expect the ceiling to crack under the sound pressure created by your setup. Expect to hear surround sound as close as you can expect from such a system.
I have a HTIB in my living room. It is a JVC and it does what it is supposed to do. It sounds nice but I can hear the difference in my theatre compared to a 1300 watt amp.
Good luck!