Amazon reviews don't mean shit. People ignorant enough to buy shit are the last people whose opinion you want to listen to.
All-in-one turntables that come with speakers and amplification built in are not worth the box they come in. They are poorly made, sound like shit, and worst of all, apply too much tracking force which ruins records.
If your budget is around $100, buy used. You will get a much better table that way. Anything new in that price range is a plastic toy with terrible tone at best. The AT LP120 will get the job done but it has its issues. They sometimes have uneven platters, and always have a lot of rumble. Styli pick up rumble so you want all the moving parts to be as quiet as possible. Technics is a good brand to look for when buying vintage and are very common.
Remember, in addition to the table you will need speakers, and three stages of amplification; a phono stage, a preamp, and a power amp. You can buy these stages in one, two, or three pieces. If you want them all together look for an integrated amplifier with a phono input. That is where you will plug your turntable into the amplifier. You can also buy an integrated amplifier with a preamp and power amp included and a separate phono stage. Or get three separate pieces. Older amps usually have a phono input, but may require refurbishing.
For speakers, always listen to speakers before buying. Different speakers have different character. Different people like different sound. Check out a hi-fi shop or even a Best Buy with a Magnolia room and listen to different tweeter and woofer types and find what you like best.
For research, stereophile.com is a great website, and vinylengine.com has a forum with very helpful users.
Myself, I have a Clearaudio turntable, a Pro-Ject phono stage, an NAD integrated amplifier, and Bowers & Wilkins speakers.
If you have any questions I can respond tomorrow. Though vinylengine.com is a fantastic forum.
Awesome detail. I appreciate it.
So is your setup completely used/refurb or is any of it newly purchased? There's an old music equipment shop a few burbs over than I can check out.