I might give that a try for a while. But I'm suspicious of the little voce inside my head. I think it's cottoned on to the fact that I've got most SE razors worth having and my DE stash is pitiful. Really liked the weird little bakelite job. It's got style. pretty mild but not overly so.
See it's easy for me. I bought up big time on vintage DE razors before I tried SE.
Also, as you know a SE blade only gives me 3 decent shaves (trying to extend it, but that's how the case is right now), and a DE gives me 3-4 shaves.
So I use a SE and DE every week, alternating them

But as far as DEs, for a vintage al you need is:
a NEW (open comb 3 piece)
a Slim adjustable (a TTO razor but also adjustable so you aren't stuck with a mild or aggressive gillette TTO you don't like - also with a decent length heavy handle)
a Tech 3 piece
Meh, Drubbings got a slim he doesn't like, you already have a Tech. All you really need is a NEW. Worth getting one because I think they are the best - but that's just me.
Besides that the Muhle razors are good, something like the edwin jager DE86 or DE 89 ?
Never been impressed with Merkur.
edit:
I've always been curious about the bakelite razors.
How does it feel in the hand?
Is the head heavy or do you feel like you have to apply pressure the whole time?
Can't speak for bakelite but DE shaving only just clicked for me when using a plastic handled slim twist/g1000/g2000 gillette DE. It's head heavy, but that means all the weight is bearing down on the blade, not the handle/wrist. And the light handle makes it easy to grip from the end and apply 'leverage', not direct pressure on the head and blade onto your skin. This was a thin plastic handle g2000 or something, not a stubbier thicker bakelite handle.
But everyone has their own technique that suits certain razors. Most people don't change their natural technique very much, but find a razor that suits their technique I think.
But the plastic or lightweight models certainly helps those use to cartridge razors (like I was used to when starting out) or SE razor users that are used to the head/blade do all the work, used to a different angle and less pressure than DE needs to be applied.