>>2821970English version? I'd save personally but if you really like the suit, you could do 3 multis on the trendy to try and hit the 3.3 once, then spend the rest of your budget on the nostalgia which is hard 3.3. Kinda depends on which girls you like though, if you really like Nanami/Patty/Lobelia it's obviously more worth it to you to keep going with the trendy.
Just be aware that Christmas is coming up, though it's hard 1.1 and some don't seem to care for the suit much.
If you're playing the jap version, they're doing flash nostalgia banners that change out daily, for about another week. So if you really want what's currently on the banner, you better roll within the next 5 hours before the banner changes.