Well, those are quite old. Try other Kefrens stuff,
Roots and Arte by Sanity for example. Buy a 030/50 card
with some memory and wait for TP5 demos.. ;);)

A quick peek at the Amiga demo guide, you should try
these. (nic.funet.fi has a large collection of old demos)

- Odyssey by Alcatraz
- 3D Demo II by Anarchy
- In the Kitchen by Anarchy
- All Anarchy demos .. ;)
- All Andromeda demos, great colours/design always!
- Origin and Real by Complex
- Delirium and Paradigma by Complex
- Other Complex demos
- Cryptoburners: Hunt for the 7th October
- All Digital demos
- All Freezers demos
- CCCP by Juliet & Case, this is a must really! Oh, it needs more than 2MB..
- Lemon demos like Rink a Pink and Groovy
- All Movement demos
- Oxygene demos
- All Polka Brothers demos
- All Pure Metal Coders (PMC) demos
- Pygmy Projects: Extension
- Razor 1911: Voyage (just great for a A500 demo, tmapping and stuff)
- All other Razor 1911 demos
- All Rebels demos
- All Rednex demos
- All Sanity demos
- The greatest demo ever, (very old) Mental Hangover by Scoopex
- All Silents demos, Hard Wired etc.
- Spaceballs demos
- All Virtual Dreams demos