My first one was a 5 in 1 that I got on Amazon for like $300. It got the job done and let me experiment with shirts, hats, cups and even plates. Lasted about a year before it broke. Now I have this one and I’ve had 0 issues with it, it can only make shirts but it’s great
I have the power press heat press (https://www.amazon.com/PowerPress-HPM-1515-BK-Industrial-Quality-Digital-Sublimation/dp/B0773Y1TNX/) which has been really good. The larger size means you're able to press larger designs. The F2C heat press is only 12x15 so it's a bit smaller. I also shy away from heat press machines with attachments as they are usually no good. It feels like you're getting more but they are crap.
It's Oracal 651 if that helps. This exact pack on amazon: https://www.amazon.com/gp/product/B01NADR97B/ref=ask_ql_qh_dp_hza
The craftables vinyl says press 15 seconds with teflon sheet at 300-315. I do that exactly and for longer and still have the decal coming off.