I tow a twenty foot twin axle van at 100% of the tow limit for my 1998 Laguna 2 Ltr estate, and find it a fine tow car. Despite the fact that we tow to the max, it still returns a very respectable 30mpg and tows like a train.
My brother-in-law had two new shape laguna's and he was always complaining about excessive gear changing even on the slightest hill. He did have the 2 ltr 16V though both hatch and estate, which might explain it.
Must admit to liking the pre 2000 laguna estate as it is a true estate rather than a sport type estate car. There's much more room in it. Also if I knacker it towing there's a plentifull supply of cheap replacements.
Steve.