the think rider is made in china and looks to be completely chinese. not that there is anything wrong with that, after all, my wife was made in china. however, you get what you pay for. personally i woul dnot go this route. i would also be a bit worried about support.
https://www.thinkriderfitness.com/pr...-power-trainer
your other choice actually has a zwift review. i did not read it. it looks like it needs a cassette so you'll be buying one of those too. and strangly it takes batteries.
https://magenefitness.com/product_t100.html
https://zwiftinsider.com/smart-trainer/magene-t100/
i think both of these are just resistance like a fluid type.
were i you and on a budget i'd stick with a mtn bike if you have off roading near by. or a road bike if you have roads, everyone has roads. i got back on the bike because i needed to buy pants with a waist size that i decided was unacceptable. i am now 140ish (wet). i ride road and used to ride mtn until my mtn bike totally broke. i do miss it.
i have a direct drive with smarts so it is really nice in zwift or rgt (the only two i've tried aside from my own program).
there is nothign wrong with a wheel on trainer. i started out with a computrainer at a bike shop 2 days a week and i was sold on the idea. you can save a crappy tire once you wear one out and put it on for the crappy season and wear that down to the cords. you do not need a trainer tire, total waste of money in my opinion. if you do go with a mtn bike i suspect you will want a slick tire though, i think the knobs will make it pretty loud.
also, i bought my trainer (kicker) during the summer and it was a previous year model, so saved about $250 compared to new at the time. these days they are a bit hotter becasue of covid but with that winding down (cross fingers) i think demand will dwindle a bit. wiht that in mind keep your eyes peeled for something on craigs list or check out ebay from time to time. they are heavy so shipping won't be cheap. i have seen a tacx locally for about $700 on CL.
good luck and take your time but not so much that you lose interest. remember the twins.