Do most people prefer tight bass or non tight bass?

I would not frame the issue in those terms. Bass intensity and detail are more accurate. Does your subwoofer dovetail with your speakers' woofers? Do drums and stringed bass instruments sound the way they would in live  small venue music?  Or do your subwoofers hit like a crude but satisfying blunt instruments so you enjoy yourself too much to care about the inaccuracy? 

Bass is not tight. If so it would be treble.

Tight for me.  Tight means accurate when I listen

Lots of great answers but bass response should reflect what the music or the movie requires. It should not in any way shape or form distort the original intent of the artist. But each listener has different expectations and the ultimate test depends on so many different factors that can never be quantified in a single answer

The first consideration must be : What is the SOURCE of the bass ?  Bass is not generic --- it is specific.  Is the source instrument bowed, plucked, blown or struck to produce the bass in question ?  The "leading edge" of the sound predicates the instrument that produces it.  A bowed doublebass has no "slam".  A tuba cannot sustain a note as long as a bowed doublebass can unless the tuba player uses a technique called "circular breathing".  A percussive or struck bass will decay rapidly whereas a blown or bowed bass can be sustained at the will of the player.  Once the source is determined, then a correct assessment of bass can be made.

Of course, with the advent of electronically produced bass, all bets are off since bass guitar can be sent directly into the recording console without the benefit of any acoustical environment to "tailor" the sound.  "FutureMan", the bass player with "Bela Fleck and The Flecktones" added octaves below what one would expect with his ground shaking "Drumitar" instrument that he invented.  So, in regards to electronic bass, your guess is as good as mine.

Put me down for "accurate bass" !