These are the differences as I find them:
Technics has an integrated phono stage. Sol plus their phono stage is going to match the price of the Technics, maybe a hundred dollars less. With free shipping from a place like Crutchfield, and not having to pay return freight and stocking fees if you don't like it, any price difference might be a wash.
Technics uses an Ortofon, Sol ships with either a Grado or AT. My guess is that either a lower end Grado or AT will perform (sound) better than the Ortofon Red, but it's just a guess on my part. At this price point it could be a toss up.
Sol has a modernist tinker-toy industrial look about it which could appeal to some buyers. Technics has that '70s 'traditional' Japanese look which could appeal to some buyers.
Unipivot tonearms are often flaky to set up, and wonky. Unipivots in general have that going for them. I don't know about the Sol, but it's a unipiviot. The Technics gimbal supported arm is going to be a lot easier to set up/change cartridges. On the other hand, Sol offers replaceable arm wands if one has to change cartridges. Not as quick as headshells, but it's there. Headshells are generally a lot cheaper to stock than tonearm wands. Sol uses carbon fiber, Technics aluminum.
Quartz PLL direct drive is going to be much more precise than belt drive, but not as simple to effect. However, in actual practice it might be difficult to hear a rotational artifact (wow/flutter) from either, if both are on speed. Sol uses a high speed motor with belt reduction to achieve rotational stability. The Technics motor is connected to the platter and turns at the selected speed.
You get 78rpm with Technics. Unless you are a 78 collector, the higher speed will only be used for using a Discwasher brush real fast.
Technics has no suspension to speak of. Sol uses a spider assembly that appears to be somewhat damped. Both should probably be kept away from acoustic and mechanical vibration.
If you want to play the mod game, KAB makes an aftermarket fluid damper for the Technics--resistive silicon gunk trough with paddle, located at the pivot. Oil damping was often standard with unipivots back in the day (Formula 4, Ultracraft, Micro, etc.). Sol doesn't look to be damped.
Sol evidently has adjustable arm height during play. This particular Technics offers arm height adjustment, but not during play. I believe Technics uses a simple set screw, and not the rotational collar adjustment of the SL-1200 series.
Sol is manual. Technics offers end of record lift, but I've read reviews indicating that this feature is not always reliable. I've also read that the Technics cueing system is not very smooth. Don't know about the Sol.
Technics is made in Malaysia. Sol is made in the USA. If you require warranty service, my guess is that the Full of Schiit guys will interact with you better than Panasonic. Never attempt to interact with a large multinational. You'll be wasting your time, and time is too valuable a commodity to waste. Instead, make sure you have a reputable dealer if you buy Technics. [edit: FWIW I own two Technics turntables--SL-1100a from 1975 and SL-1200 Mk5 from 2005. Both work like new. Whether the Malaysian Tehnics product is as well built or will last as long? YMMV. I also own a couple of Schiit electronic products that appear to be well built for the dollar--headphone amp and DAC.]
Technics comes with a dustcover with that cool looking bubble over the arm.
That's about it. Oh. I forgot. The biggest difference between the two brands is that Michiko Ogawa and Sara Ott look a lot better than the Full of Schiit guys. That alone would make me pull the trigger for the Technics, all other things being equal.