I loved 10D and hated it at the same time because I was hyped for Youmu and then she turned out to be a terribad character. I think my favourite is probably either SA or IN, because lolco-op. Reimu/GapTroll is the funniest combo, story-wise.
Also STB and DT were amazing. I loved the focus on taking pictures of dmk and less on killing your opponent. Unfortunately, because I have grandfathered myself the idea of "DESTROY EVERYTHING COLLECT EVERY POWERUP", I didn't do too well.
I also managed to get a hold of a PC-98 emulator at school, and so I've been working through LLS and PoDD (Lotus Land Story and Phantasmagoria of Dim Dream for the Windows-only people). It's good to know where Bad Apple!! finally comes from.
For those who are interesting and only getting into the game; I would not be too bothered by GAME OVERing on the first few levels of easy. These games are nothing like you've ever experienced. Also, don't be too bothered about shooting and killing everything and getting powerups. The longer you survive the better, and anything you get now won't necessarily advance that goal, especially if it puts you at risk. Another thing is; don't be stingy with your bombs. Obviously save one or two for the final boss, but if you are able to tell when you're seriously fucked up, go right ahead. It's better to use your bombs then die on the boss than die now and have two wasted bombs on a lost life. Finally, grazing bullets might give you nuts-ass score multipliers, but if you aren't good at it, and you don't think you can do it, nobody is going to call you a coward for hiding in a blind spot instead.
In this game, time spent being alive is the largest co-efficient to your score.
One last thing- the OP's screenshot is nubcakes level. Try Lunatic Eirin's Final Spellcard. That shit is literally impossible to do without either bombing or dying. And the best thing is, during the bomb/post-death invincibility, the TIMER IS STOPPED. Because FUCK YOU.