Onkyo HT-S3400/3500 is great for someone on a tight budget but if budget is 40k then please do not go for any HTIB systems. You should go for seperates :
OPTION 1 : AVR + 5.1 Speaker System
OPTION 2 : AVR + 2 Front speakers (build the system speaker by speaker)
I would prefer OPTION 2 where you get really 2 good front speakers which will work better than OPTION 1. Some of the good names are :
AVR : Marantz, Denon, Onkyo
Speakers : Wharfedale, Boston Acoustics, Jamo, Polk Audio, etc.............
Boston Acoustics XS 5.1 is an excellent 5.1 speaker system, if you want to go with Option 1. Ensure you hear as many speakers with different AVR's and then decide. Generally you want to match a bright AVR with warm speakers and vice versa.