I have a new one arriving this coming Thursday. Hopefully I can get it set up in a week or so and I'll let you know what kind of tolerances it cuts. At least one of the posters on here does work on automotive cylinder heads. I don't know if Shoptask has anything in stock right now. I sent my payment on March 31.
I have used larger dedicated lathes and mills, so this is going to be different. The location of the X and Y axis handles are different than on larger machines.
You might find someone on here close enough to drive to and see their machine. If possible, you might also look at dedicated machines in use at a school or shop and see if you can turn something.
Right now, the main problem is the dealers of all makes getting their machines from China. Parts suppliers are going under everywhere, so the manufacturers are having problems getting the parts to assemble. Most, if not all of the smaller home size machines are made in China now.
Shoptask has a discount for advance payment. I think another 200 off for cash. Grizzly has a buy now pay later plan which delays payment for 90 days. If you pay it off in 90 days, there is no finance charge. It will probably take several months to get a machine from most sources. If you are in a hurry, Enco has some of their lathes in stock. You can go to their web site and check availability.
In this economy, you need to consider whether or not your nerves can take sending off several thousand dollars and waiting. If you can get a 0% credit card for purchases and/or balance transfers, you will be safe. The card company will deal with the seller for you.