Hi Welcome to the Group glad to have you here you'll find everyone is very helpful on here.
I guess first thing to consider is how much do you want to spend on the machine, the Bernina's get pretty pricey. The 440 has been replaced by the 550QE that's what I have and it came with every foot pedal they've got and I paid $3500 I new to quilting I've been doing it about 2 yrs and I love this machine.
Sometimes you can find them on Craigslist or eBay on sale, also check your LQS and see if they've got any class machines on sale. I know ours puts them on every 6 months. I've seen some of the 350s on sale for $1200 it just depends on what your needs will be, how much you'll be quilting. Hope that helps some what answer your question.