[churchx]

I still think that from all three available alternatives, tire repair kit, spacesaver, full size spare, spacesaver is best compromise. With own flaws/cons/limitations, but overall - best compromise.

How often do you get flat/punctured tires guys? From my experience once .. per 2 years. So for that one day for two years long each day i'll drive around extra weight of full-size & have reduced volume of already small trunk. Slight, not that bad .. but are pros enough outweighting cons?
Tire repair kit? After use of which most probably shop will refuse to fix it, and very probably depending on tire wear at least two tires or maybe full set will need to be bought sooner? I've also heard that these kits are unable to fix some type of damages, so don't know if i'd ever want to rely on it.
So my vote still is for space-saver. One of first things i changed for this car after purchase from stock repair kit. I had used sapcesaver donuts in past and know i can rely on it and to what extent to rely. Yes, LSD diff adds some extra remounting work in half of cases where it's bad luck of puncturing rear, but i like that i can save a lot by bringing in tire shop punctured tire, with great chance have it fixed, and then not having to buy new tire replacements, but i still can use one fixed tire with wear like rest in set. And i can use full trunk volume with flat floor all the time.
P.S.
There is one big con to spacesaver though. Not for me using stockers, but for some here. Most probably it's brake clearance if one has BBK installed, will SUCK. Making it not an considerable option. Some AMG/brabus mercs or Porsche may make specific alloy spacesaver wheels to clear even their big brakes, but most donut options for 5x100 comes from subary/toyota/VW generic cars partbin, not designed with non-stock part support in mind. That may mean that unless with some spacers one has to bring along, they might not even been mountable front with BBK.