I assume you have no experience with DE/SE razors and only with carts and your shavette?
In this case you have 2 options:
1: get something true and tested, which you can learn with. So the Edwin Jagger 89 (or muhle for that matter) or the Merkur 34c.
Both can be bought in numerous places, are mild yet efficient and will give you many great shaves. For me, they also give you close shaves (if you know what you are doing) but many say, they are too mild...
2: skip your first razor and buy your second. Too many options here, just modern (Muhle R41, merkur progress, a slant, and 100s more) or a vintage (Gillette oc, some GEM SE's, a slant and again 100s more)
I highly recommend route 1, life will be easier - and you might realise, that a mild yet efficient razor is better for you anyway.