Spend some time going through threads in the Haas forum, there are tons of information there.
I think the Haas control is user friendly but I have never used a different one so what do I know. The Haas control is definitely different to many other machines and I strongly suggest you spend a lot of time reading the manual
You will probably get people telling you that a probe is essential, I don't agree but I am a stick-in-the-mud.
Once you have the machines on hand post any specific questions you have and I am sure you will get plenty of advice.