I've been printing for about 18 months.
Hopefully I can steer you away from some of the mistakes you might make...
* Avoid delta printers for your first printer (unlike me). They are fiendishly difficult to calibrate properly, and if you have a slight issue with it then it's not obvious exactly what's wrong. They are probably about 5 times more difficult to get printing properly than the other cartesian style printers.
* Avoid printed parts, especially for motor mounts. Motors get hot. Plastic warps. Motors also have side loads from a belt. Figure out the rest.(Note, printed motor mounts in PETG are OK, but all the kits will print them in PLA, which isn't).
* Get one with a heated bed, and hopefully get one you can enclose later on when you want to print larger plastic parts.
* Buy a sheet of PEI for the build plate. I can't stress this enough. Don't d!ck around with blue tape, hairspray, glue stick, ABS juice, and all manner of other concoctions. Just get a sheet of PEI and be done with it. It's good stuff.
A good entry level printer that gets excellent reviews is the Prusa Mk 2 (original). This has been cloned many times, because it's a good printer. You can't go much wrong with one.
Also check out the forums at
reprap.org/forum/ if you get stuck. They are pretty active, and there are some smart cookies on there.
My workhorse was a cheap $500 delta kit from China. I've steadily replaced just about everything in it with better components, redesigned everything, and now it's giving beautiful prints and making a bit of money on the side.
I print 80% in ABS, 10% PLA for clients, and 10% in PETG/TPE/Metalfill.
Be prepared for 3D printing to take over your life if you're anything like me!