Which turntable is better?

I have the SL-1500C and have no complaints.  Actually, bought it on and paid $900 and it was in like new condition.  Go on Google Gemini and compare the turntables you are considering.  It will probe the daylights out of you, but will help in your decision. 

Can only comment on the Mofi.  After months of research decided to go with the Mofi Ultradeck with MasterTracker cart and am very glad that I did.  Rock solid, dead quiet with incredible detail and soundstage.  Very happy with the purchase.  Best of luck to you.

1st turntable

Not everyone sticks with Vinyl, then there is keep it but only as an option, followed by hooked on vinyl.

How many LPs do you own? 

Jazz, eventually with many Mono LPs?

here’s hooked on vinyl, took me over 40 years to get here

That’s a dedicated Mono Cartridge on the left; rotation of various Stereo MC moving coil in the back; rotation of various Stereo MM Moving Magnet on the right.

I helped a friend with a Luxman PD444, which allows the easy addition of a second arm, it’s a real winner

https://www.audiogon.com/systems/11900

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Arm: I highly recommend a removable headshell, combined with a height adjustable tonearm, because cartridge heights vary from undersized 14 mm to oversized 21mm, 17mm typical, 

and, a true mono cartridge is definitely better for playing Mono LPs (how much better depends on the lp).

You can get a starter system and use it to prove whether you get hooked, move up later, keep a working spare, ......

You Phono input has an MM Phono and an optional MC setting.

Like my Luxman Integrated in my office, it has a single fixed 100 ohm impedance. If, when you try a LOMC low output moving coil, look for one with a coil impedance between 8-12 ohms.

I chose and highly recommend AT33PTG/II LOMC with a 10 ohm coil.

Eventually you might want a separate SUT Step Up Transformer with optional impedance settings, to continue to use you unit’s MM Phono input, or a separate more flexible MC Phono stage.

I chose this SUT, because it has 3 selectable inputs, PASS for MM, and 4 optional impedance settings (all options front selectable rather than rear switches or internal jumpers).

https://www.audiogon.com/systems/11318

In my personal experience the  Mofi Ultradeck is the best balance of quality and value for the money spent. I am delighted with mine. My experience of the others is limited to showrooms and only mildly lengthy analyses of their, or my friend's personal, systems.