Ahem!
Getting back to the OP's original query as per the thread topic, Well, Mr Arivuchelvan, here are my two phooti kaudis.
Firstly, you MUST buy what sounds best to YOUR ears but do keep the u/m aspects in mind.
One, when you compare the two, one must realize that the MSs are rear ported while the MAs are front ported. Therefore, one must discern whether what you thought is "bass" was not really port noise from the front port of the MAs which may have sounded good with a certain type of music but may get very intrusive with other kinds of bass heavy music. Having said that, do remember that rear ports are disadvantageous in small rooms where one MUST have at least 1.5' of space between the rear baffle and the wall. Also, do keep in mind that the speakers will sound different in a home environment than a listening room. I heard a pair of BR6 and liked them a lot save the port noise factor which is actually inherent in a bass reflex design which is what most budget level towers are. Ports are a design compromise by themselves in the first place, created and tuned to enhance the bass response of a cabinet bt the tuning is very tough to get right especially in floorstanders due to the length of the column. Therefore, I recommend a transmission line or horn loaded design for the gents who are hell-bent on floorstanders. Since it is tough to get these in sub 50 k budget, I would recommend that you go in for GREAT front-ported bookshelves at this price with a sub thrown in. You cant go wrong with that as much as you can with budget towers.
Nevertheless, do ask yourself the question whether you want to go in for a pair of speakers or a piece(s) of furniture as well. In case you still want to go in only for these go for the MSs if you have a large room and the MAs in case you dont.
Regards