@ umbreon: Lol. I was sad to see some costly situations because of an u-throw at super high percents
@ pp: the vids are up. I just can't do it with my phone atm cuz it uses too much data
Edit: here's some reasoning about throwing peach off vs throwing up at high percents: basically when wanting to set up kills vs peach as marth, you usualy want to do it like a step-by-step thing when you remove her jump/float and then continue to either rack damage, or go for the finish. Throwing peach off the stage forces her to use her float and/or jump naturally, whereas when you throw up, there is a chance of getting stalled/tricked/baited with the float/jump/FF/etc. since peach already doesn't have the range to attack marth, or even grab the ledge with good edgeplay, you have automatically removed 1 of her best escape tools, making it easier to go for the kill. When she has to DI away/neutral, then the recovery gets hindered even more.
Though it is true that they can pull some tech trick, but going low, especially vs the top 5 characters is generally really bad because they have some sort of spike or projectile that also has low lag and you can punish the following tech (sans jiggs I guess).
More later. I have arrived at the gym. Lol
Quick edit: neither option is bad, but it's definitely more work with u-throw.
I for one man a fan of u-throw at low/mid percents though