So an AND gate is what I need to test the low cost version, right ?
Yes, that's right.
Any model in particular (I've found this one for instance: CD4081
I'm not the specialist in those things but I see no reason why a simple 7408 wouldn't do the job.
Is a shielded cable worth the price in my case ?
This depends a lot how electrically noisy your environment is. If in doubt and you can afford it, take the shielded version.