solo

On witch one dq 8 or 7

Both, really, though I think I'd put 7 forth as the one with more twists.

Yeah, DQ8 definitely telegraphs almost everything that is to come.  The twists are very much expected.  It is a more character driven narrative though, while 7 is more of a plot driven.  So definitely very different animals, and both well made.  8 has a ton more polish though.

8 3DS is definitely the defacto definitive version of the game.  For all the beauty of the PS2, and the amount of foliage and trees ripped out for the original 3DS hardware (I really wish they made it for the New 3DS), the on-screen enemies are fantastic.  It makes the game so much more enjoyable.  7's onscreen spawning system is not quite as good, but has some superior aspects (camera rotation in 8 is exploitable and fun, but can also be annoying as a sudden spawn right next to the party can trigger a battle you don't want...7 fixes spawns and camera position has little input, and 8's spawns last forever until you turn the camera, while 7's last about 1~2 minutes then disappear, unless you're close by).

Proximity range in 7 is also much shorter than in 8, but then 8's dungeons are MUCH larger, as is the overworld, though 7's 3DS overworld is huge (needs more hills and trees, but that's a story for another day...and it should have been patched for the New 3DS, with improvements, and the camera button, and L2 and R2!).  Sigh, coulda-shoulda-woulda stuff, sorry man, lol.