If want to get a good feel for DE shaving from mild to aggressive without buying lots of razors go with an adjustable. My opinion the best entry level adjustable when first starting is a vintage Gillette Slim. It has everything you would want when starting out and can be had for under $20.
I like it. I have a Boker King Cutter for my “Zen me time”. I use the shavette when traveling or need to save some time. The Focus has a good feel, but is REALLY light, so there was a short learning curve with it. I have to use more pressure than my Boker.I think you made a pretty solid choice. I started with a Weishi just in case I wasn't a fan of DE's and then moved to a 34c. I wish I just went with the 34c in the first place but now I have a decent travel razor which is exactly what Joe Namath suggested. Gillettes of auctions sometimes have to many variables unless you buy it from a B/S/T group.
Just out of curiosity, what did you think about using a Shavette?