Their old album "Rapture"? I guess you´re referring to their debut album "Walls Of Jericho". (It had a song called "Reptile" on it.) It was one of my favourite albums way back in the eighties and if I still listen to a Helloween-album today (which actually doesn´t happen very often), it´s this one. "Ride The Sky", "Phantoms Of Death" and "How Many Tears" are definitely my favourite songs, not to forget "Victim Of Fate" from their eponymously titled debut EP - speed metal at its best with some excellent guitar solos!
I also liked "Keeper Of The Seven Keys Pt. I" very much way back then and I think it´s still a very good album. However, I wasn´t that impressed with "Keeper...Pt. II" and haven´t bought any Helloween-album since then. I simply lost interest in this band as it has happened with many others of my "old heroes".
Maybe Helloween still release good albums, but I doubt any of them would impress me as much as "Walls Of Jericho" did. As there are still more than enough very good new albums for me (a steadily growing number from other music genres), I try to avoid buying albums which are just "good" (to my ears), because I wouldn´t listen to them anyway. I mean, if I can choose between a "very good" and a "good" album, I´ll always prefer the "very good" one.