I would get an old Double Edge Gillette Razor. You can get 100 Astra or 100 Personna Blades for around 10 bucks. I use an Old Gillette Black Beauty Twist to open, which is also adjustable.
If you get an old Twist to open, or even a new one, they will need to be cleaned out somewhat regularly. For that, hit the easy button. I spray my down with Safariland CLP, inside and out. Twist em open and shut a few dozen times, then rinse it out thoroughly with hot water, then drop it in a glass of distilled water for a few minutes.
And I would recommend shave soaps and a decent Plisson or Plissoft brush, and mug over canned shaving creams or gels. You can get a razor similar to mine, a nice vintage shave mug (I use an old Hazel Atlas Milkglass Shaving Mug...but a Porcelain Cappuccino Mug will work very well also) an awesome Razorock Plissoft Brush, and a puck of shave soap for $40ish all told, if you know where to look.
I paid $20 for my Gillette, $10 for my mug, and $12 for the brush I'm currently using.
For soap, I use and love Williams Shaving Soap. Many hate it, because they don't know how to lather it properly. Mind you, I have other creams and butters. But when you learn how to use Williams right, that heavy, tallow based lather is unbeatable. It is heavy, long lasting, and SLICK! The scent is very faint as well.
If you want a straight razor in addition to that, there are some good shavettes out there, that can hold the same double edged razors that your safety razor uses. They are great for detail work. And again, for around $10 you can get enough quality blades to last you for more than a year. There are some great shavette razors out there than can be had for less than $20.
I'm not knocking straight razors, but a quality straight razor is going to cost more than $40, and they require a LOT of maintenance.
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