Started off with the cheapest DE I could find just to see if I could get on with the whole thing anyhow. Then quickly went over to SE as my main razors and after accidentally discovering the delights of a light weight bakelite DE (7O'Clock), that is now the only DE I use. Have tried most DEs including a few open combs, TTOs, adjustable, three piece etc and didn't really like any of them. All I can recommend to you is not to try a Gillette Tech. After straight shaving you wouldn't be able to tell if it has a blade in it. Maybe an adjustable although the heads on those things in comparison to a straight will appear really cumbersome. Ditto with TTOs. Maybe there's a modern three piece out there that isn't too mild. In short I'm not really the person to advise you. Get hold of a 7O'Clock bakelite or a the Gillette equivalent. Awesome razor.
Basically I've learned how to shave using SE which is similar to straight shaving in that control of the pressure and angle are absolutely critical. Although it's to a degree also important with DE shaving, that kind of control I find is simply not possible with heavy, metal razors with big cumbersome heads. But that's my story.
