Personally think CD's win in the noise floor area. But once you have clean records, and a very good cart, the difference is minimal. CD's can be cold, records can feel like they have life in them. It's a give and take, sometimes one is better over the other.
IMHO, you can NOT dabble in vinyl. You either do it, or you do not. It is a big investment, in both time and money. Low end TT's suck, they have so much noise, and can be finical on setup, lacking some key adjustments. Think getting a $1k used TT, then a $500 cart would be a great starting point.
In my TT journey over the last 3 years has been 3 new TT's about 5 carts, several cables, then a couple power supplies. Once getting my current TT, I realized the money wasted on the "budget" TT's and carts. Once you experience a low noise floor on a TT, with dynamics, and punch, you will understand it.

