Best launch in recent memory for me was probably the PSP. Lumines, Wipeout, Ridge Racer, Hot Shots Golf. I'd say PSP, Dreamcast are the best launches I can remember. I don't think any of the Playstations had good launch lineup day 1. Also keep in mind that launch lineups were better when there was a 6 month gap between Japan launch and western launch since it gave devs 6 months longer to finish their games and get out for launch. I've bought almost all of the mainstream consoles on day one (either the Japanese or American launches) since the Dreamcast came out- before that I got the PS1 at launch.
The portables seem to have better launches. GBA, PSP, and Vita were all pretty good. Wasn't as big on the DS launch, although I was all over the 3DS launch just for Street Fighter, lol.
Day 1 launches have always been barebones. Remember Fantavision? Yeah- it was pretty good.
That Soichi Terada soundtrack
Edit: I was looking for music and it looks like the American version has a different and much worse soundtrack.
Edit 2: So chill~
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