Mk.588 did a good job outlining the different components. I think techknight, trag, jdw and others also covered it in different ways. I am not an electrical engineer so I defer to those more knowledgeable about picking the best components. I offered my own take when I found out about polymer caps as a different technology and did not really see anyone talking about them. I listed exactly what I used in that thread and re-posted in the cap replacement thread. If you use those parts they will work and their dimensions are as close to stock as what I could find at Mouser. I think it's also fine to use tantalums, but I offered that info. for people who might have a special board/machine they want to keep looking more original. Using electrolytics for the small caps seems suspect going on our collective past experience. I do not see a reason to buy the cheapest parts when the better alternatives are not very much more. The time you spend on the repair is worth using better parts and repair methods. You can order from Trag if you have no clue what to buy.
If you are going to list parts here, I say the rule is you have to actually use them before you recommend them as a substitute.
Yeah, I sort of feel it has become the norm and is turning off people that make this forum a great place to learn new things.