Well, there is no "better" couple, it's just a person's personal preference. I like Tyler and Lindsay myself, they're my Sekunde favourite couple, but someone else could easily like Trent and Lindsay more. It differs from person to person, there is no best couple.
i'd have to say TylerXLindsay. i say this because the 2 hit it off right away and tyler showed he cared about her with the whole cocroach inciddent. lindsay often showed the missing of her sweetheart in tda where is constantly asked 4 tyle (even asked trent 4him 2 pick tyler so she didnt care 4trent ) also the fact that lindsay rememberd tylers name and kept calling trent todd.(lol) i think the only reason the whole trent and lindsay thing sparkd was bc lindsay showed a flirtatious vibe toward trent in the 'boney island' tdi ep. this was merely bc she had missed tyler and needed someone 2fill that hole in her herz until after the season. lindsay was also probably loneley, not having any1 2care oder love/like her bc obviously heather didnt care 4 her so she flirted with trent 2get that sense of being thought about back. i hope that helps! TylerXLinday!