I think the folks here misspoke a bit. The repeat stop is best for cross cuts, preferably not that wide. The error won’t be great, you’ll get a 90° and parallel cut. If the board piece is longer, the error for two sides no being parallel increases significantly. Let’s say you are cutting a plywood sheet and you need a full length cut and about 3/4 width. A stop guide will be butted up against the width, we’ll be doing a parallel cut. Chances of both ends being exact 8ft is unlikely, there will be a millimetre or three of difference. When you use parallel guides, we have two reference points as opposed to one. The cut is a rip cut now as opposed to a cross cut. Since both distances are set properly, we can be more sure that the margin of error is barely a millimetre, if done correctly. It is a personal preference, some folks do rip cuts first, others do cross cuts first, when breaking down the sheet. If one is doing a rough cross cut, the rail stop guide is fine, can be made parallel later. If accuracy is important, doing the cut once, than a parallel guide would be better. Personally when I do the first few cuts, I use a parallel guide. When the pieces are more manageable but bigger than 820mm (my quad hinge capacity) I will use the rail stop guide to get the cuts done. If one has the space, I would recommend to build a bigger table that supports a 8 foot fence on one side and a 4 foot fence on the other side, use two quad hinges, all the cutting will always be square and parallel thanks to the hinge and fences. So far that is what I am leaning towards for next year, I’ll see if I work with lumber more or sheet goods. My lumber is usually 8 feet to 16 feet long. Parallel guides and stop guides are not that useful on them as minimum marking begins at 19cm usually, if the width is smaller, doesn’t help much or if the cut is longer.

@@asderven thanksmuch for detailed writeup.

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@@TheToolJunkies no worries will have look. Thanks