I really don't get what you actually DO in Flower since I haven't found single Video Review..
But I think I get either Trine or Fat Princess, or 3 or more of those cheaper games.

wipout hd with the fury add it will keep you busy for a couple weeks

Flower is good, its different, but I would also purchase another one since flower is good for a couple of hours, or once in while. Its like a Wii game but with an AMAZING presentation and simple controls that do what you want them to do.

fat princess ftw

You can't go wrong with ratchet and clank or the crash bandicoot games.

Fat princess is epic...i played it at a friends house and i got hooked! It's fun, specially if u play with a few buds (online, not on the same ps3 to my understanding...)

A few PS1 titles you find interesting and never played before.

flower and fatprincess ,
rachet and clank is also fun

for the cash,wipeout is worth it. Although buy another psn card and get wipeout and its expansion for 24.99...well worth it.

Fat princess got boring after awhile,if you completed Ratchet and clank:tools of destruction get the expansion for sure!!!I dont have flower but from what i hear it sounds amazing but short. Superstardust is amazing,you can buy the game and the expansions for under 20€ me thinks.you can play your own music in the game and co op is great fun.Hope this helps

I think since Ratcher crack in Time is coming I pass Quest for boody...I could buy it on blu-ray and then sell it...
Trine...I could get it for Pc also..
Wipeout has never really hit me tho I know its worth of 20€ easily.
I guess I go for Fat Princess.