Can someone check these sentences I need to prepare on our local wines?

Thank you very much in advance!

1) The are two schools of thought about barrel ageing which can be grouped in traditionalists and modernists.
2) Traditionalists support the idea that the wine should be made according to traditional principles thus allowing long fermentation and aging times of three or four years in large casks of Slovenian oak or chestnut wood.
3) In contrast, modernists support the idea that the wine must be aged in French oak barriques in order to be smoother, fruity and sooner drinkable. 4) These two new visions of making wine have been the cause of strong debates and arguments not only among producers but also among consumers.
5) The wine aged in casks shows paler colors and higher transparencies,whereas that aged in barriques shows more intense but less transparent colours .

1) The are two schools of thought about barrel ageing, proponents of which can be grouped as traditionalists and modernists.

2) Traditionalists support the idea that the wine should be made according to traditional principles [<~~ADD COMMA HERE] thus allowing long fermentation and aging times of three or four years in large casks of Slovenian oak or chestnut wood.

3) OK

4) These two new visions of making wine have been the cause of strong debates and arguments [<~~ADD COMMA HERE] not only among producers [<~~ADD COMMA HERE] but also among consumers.

5) The wine aged in casks shows paler colors and higher transparencies, [<~~ADD SPACE HERE] whereas that aged in barriques shows more intense but less transparent colours .