Continental Contact II are pretty good (and are actually rated for tandem use). In 32mm they are about 550g which has got to be about 200g less than a Marathon Plus. We're happy touring on them for sure, roll along nice enough and seem strong.
On the rare occasions we want to be a little zippier, then 28mm 4 Seasons are plenty good enough for the job.
Continental Contact II are pretty good (and are actually rated for tandem use). In 32mm they are about 550g which has got to be about 200g less than a Marathon Plus. We're happy touring on them for sure, roll along nice enough and seem strong.
On the rare occasions we want to be a little zippier, then 28mm 4 Seasons are plenty good enough for the job.
We're a fairly light team at around 120kg.