Greetings -
I feel hardly qualified to recommend anything since I’ve only been using one for about a month. But rickster posted a little info on the BambuLab 3d Printed Accessories here and I agree that this platform is a very easy interface and way to start.
I will tell you, I struggled with the whole glue stick and cool plate thing for a while and said I’m done with that. I switched to the hot plate and no glue, thinking if it doesn’t work this way, I’m figuring out a different solution. But it worked perfect, only one thing so far was a little difficult to remove. And I’ve only had one thing that didn’t stick on start up, and made some spaghetti. But the camera caught it and stopped the print in just a couple layers, so no big deal.
Anyway. Their cheapest seems to have everything you’d want to have, again, based on my very limited knowledge. It will only do one color at a time, but is compatible with the AMS, which you can buy later.
I think for the more heat resistant / tougher plastics you will need an enclosed unit, for smells and temperature. But for just simple PLA, an open sided unit should be fine. But talk to BambuLab, I think they will actually answer the phone and questions. 
But there’s a bunch of colors and a million things you can do with just the basic PLA material. So I wouldn’t hesitate to buy the least expensive one just to have fun with it, learn how it all works, and make some spaghetti. 
HL