I had an Overbuilt Napoleon Complex head that was an amazing little 18 watter. Very sweet breakup and crisp cleans via your guitar volume. Good volume and dynamics range, excellent reverb.... would probably snag that one again if I could...
Less common but very much worth checking out if you can: Sommatone Roaring 20. There are clips and a review of the 40 watt version on TGP Webzine to give you an idea.