what matches the best to RT7?

[aaleshin]

I'm going to extend my audio from stereo (I've got RT7 speakers) to 5.1.
I found out that CSi3 center is the best fit but I can't find related front speakers (RT7 will be back speakers).

Is TSi 300 a good choise?

[curved]

With your CSi3, get either RTi8 (RTiA5) or RTi10 (RTiA7)...