If you want to keep using DE blades (halved), then the Twig and Parker's Solo Edge are well regarded.
However, you wouldn't be getting the benefit of using thicker, rigid-by-nature blades like injector, GEM or Artist Club blades.
A GEM 1912 is an really nice shaver and can be usually had pretty cheaply (though you might need to clean and sanitise it).#
An injector razor can be had for not much money, and there have been a few NOS floating on eBay recently.
Yaqi has a zamak Excalibur that would let you dip your toes in at a pretty low cost.