Rear ported speakers cannot be flush-mounted to the wall w/o changing the character of the speakers. If you need to flush mount the speaker, you would be best to consider sealed or front ported speakers.
They do make mounts that allow...
What is the best 5.0 that won't make you hurl? Impossible to answer, as everyones taste differ. But in general, if you aren't spending at least 100 dollars per speaker, you aren't likely getting much quality'
Do you already have a reciever? Second, you will get a huge bust in SQ with just two decent bookshelves...
That said, you won't get a decent pair of bookshelves and a AVR for 100 dollars.
While your receiver can correct for your speakers not being equal distance (assuming you have auto or maunal room correction functions)...I would thing position B would be prefered. Atleast a couple feet behind and above the seating...
First, I would try to get the cheapest avr that you can. Second, the energy take classic is for very small rooms.
On a 1000 dollar budget, I would to to allocate 500 dollars to speakers 200-300 to
an avr and 200-300 for a subwoofer....
In the ID direct era of consumer purchases, audition means you buy from a place with a good return policy! Hearing the speakers at YOUR house/apartment/room is best anyway!
Again, the problem is...for the price, you really cannot do alot worse than Bose! Sure, some Bose system will sound better than really cheap htib. For the price, Bose has few equals in terms of limited SQ!