Breaker's & Breaker's Revenge are pretty fun games if you ask me. In a weird way they remind of of Power Instinct, but I guess they are sort of Alpha-ish. BR only had one new character as far as I know; otherwise it was the same game as the original. That goes as far as the normal game (and even the intro!). If you're wondering about boss(es) and endings, I really don't know. I haven't beaten either of them. If you have an MVS setup of any kind, go with Breaker's Revenge, since it's slightly better overall, and adds Saizo to the roster.
To go a bit off topic, Ragnagard is known as Shin Oh Ken in Japan, and like Breaker's is a rare Japanese-only home cartridge. I sold mine earlier this year, and I quite enjoyed it. I loved it in fact. But I must say, unless you actually read the instruction booklet and test out the strategies presented within, or get yourself a combo guide from an issue of Neo·Geo Freak or something, then you'll have a good chance of sucking at the game and will likely hate it. Truth be told, if you don't know how to play, you'll get creamed unmercifully and will probably come close to shattering a joystick in frustration. Trust me, I've been there. As I mentioned though, if you do take an hour or two to comprehend all the aerial battles, counters, combos, etc. of the game, you'll find it a challenging fighter, where one must truly use different tactics vs each opponent; not the same techniques against anyone like in some KoF games. And just to clarify, it was made by Saurus & System Vision. Video System did the Aero Fighters trilogy.
Wow that was longer than expected, but you should be content with either Breaker's, so good luck whatever you do. BTW if you go with Breaker's Revenge, I have something that you might like.
[This message has been edited by Neo Bomber Man (edited October 01, 2000).]