Heart that I have on vinyl:
Dreamboat Annie (bought when released)
Little Queen (bought when released)
Magazine (thrift shop special)
Dog & Butterfly (bought when released)
Bebe le Strange (thrift shop special)
Heart s/t (1985) (thrift shop special)
I also have Dreamboat Annie on cassette and CD, Little Queen on CD and a Greatest Hits collection on CD. I thought I had some other newer material on cassette/CD but I guess I must have sold it off at some point? To this day when I'm at home and want to listen to Dreamboat Annie (or have a friend/house guest who does) I still play the vinyl version. There's nothing better!
Basically I agree with TheWhalerfan. I much prefer Heart's older and more rocking material than when they got into lame power ballad territory in the 80's like certain other 70's bands *cough*Foreigner*cough*REO*cough*. The exception being Dreamboat Annie where I enjoy all the songs whether rocking or a bit more on the mellow side.
Also interesting (to me) to note is how well Heart performs Led Zeppelin tunes