Sing to God Parts I & II are probably, ultimately, my favourite studio albums, featuring as they do a much broader range of, er, noises and things, but it's hard to deny that A Little Man and a House and the Whole World Window and On Land and in the Sea are two stone-cold classics. However, Heaven Born and Ever Bright is fantastic too, although again, like Guns, it enjoys a somewhat under-appreciated status in the Cardiacs canon. Coming hot on the heels of the theatrical and proggy sound of ALMAAHATWWW and OLAITS, HBAEB wrong-footed fans with its much more stripped-down sound. It also ushered in a 'new look' Cardiacs, with many key members (Tim Quy and, of course, William D. Drake) no longer in the band, with a focus on creating, as Sproggy put it, much more stylish and anthemic work. I would also strongly, strongly recommend seeking out The Special Garage Concerts Volumes I & Vol II on which they reworked a number of ancient Cardiacs songs to magnificent, jaw-dropping effect.
Basically, there's nothing in the Cardiacs back catalogue that isn't worth checking out. I love Cardiacs, they are my favourite band, and I truly, sincerely hope that Tim Smith is one day finally recognised as one of the most brilliant musical minds this country - or any country - has ever spawned!