We like Stahls for their non-print HTV and HotTronix presses. Have been using Briteline's Turbo Print, it really is fast to press. It's rebranded HTV from a company out of Germany. Good stuff.
I'd stay away from FMExpressions for transfers. Nearly cost us our largest customer, and did cost us a few thousand in profit. We submitted artwork directly from the company's own marketing department and like a day before delivery they tell us that they needed written authorization from said company. So now we have to go back to the customer like a week before our due date and ask for a letter of authorization for us to print their own artwork. No thanks. We learned real quick how to produce the stuff in house. Also no thanks to SignWarehouse selling us the wrong transfer tape. Still got the job done and no one knew how close we were our worst disaster we'd ever have.
If you can manage time wisely, Semo Imprints has been pretty great for plastisol transfers.