Personally, I find Mass Effect's universe much more compelling than the Star Wars Universe.
I think that is probably true. The light sabres, the force and furry creatures never really appealed to me.
I'm still trying to force myself to play through SW:KOTOR, but that is probably painful due to the age of the game rather than being part of the Starwars universe.
In addition to whatever I said earlier... I hope that when they do release future titles, that it is also in the form of trilogies... The idea behind save game importing to continue your own story increased the re-playability of all the games in the series not to mention the increased anticipation for the next game.