AndyG1987 Since you are not a regular (but an occasional) milk steamer, I believe, you are ok with an HX.
However, a lot of us do not steam milk for every cup. Some do not unless they need to for guests. I steam 3 times a week. If you do not mind the extra cost, I would suggest a DB. You know it’s there, just in case ….You never know…. Hope it makes sense.
Bianca will be a cracking machine, unless you would like to consider Vesuvius, whose price isn’t significantly different.
I have a DB Evo.
I’m sure other experienced folks will chip in.