Thanks for your feedback. I'm glad I did this choice, the M11X is great in hand. Solid radio. There is a mental thing about it weighting a bit more, it makes me trust in it I feel more confident compared to my previous light radios. I prefer it being a bit too heavy than the contrary, really. Like you said if it's too light it feels like a toy and moves more also when you hold it.
Concerning sharing rc cars with my girlfriend, it's natural. I'm 28 only but it's been a long time we are together and we have always shared our passions. It could be dancing or fishing or whatever, a hobby has to be lived with friends or close persons IMO. I don't feel it like being "another thing" or "an occupation". It's part of our lives, little cars are everywhere in the appartment

Some call it "being seroius about it", I would say that it's a part of what makes us happy so it just has the place it deserves

. IMO love is about feeling naturally concerned about what the other loves too.