First, I would like to thank the Internet for it’s ability to allow me to comment here without fear of embarrassment.
I have a Fleshlight. The mouth version, for the curious - because I didn’t want it to be too impersonal, like the plain, or too real, like the vulva. I don’t think they had the anus or I might have gotten that one. My wife and I picked it out together as a Valentine’s Day gift, IIRC. We got some other things at the time too. It is not a “piece of plastic” - it feels, well, not like a woman, but not like plastic. It feels nice. And it works very well, but it does take time - they recommend you warm it with water first - which does make a huge difference.
The other choices, like the pocket pal, I have no idea.
Yes, they work, but after spending some time browsing through your average porn shop I found out two things:
prices aren’t much better online (which surprised me); and,
for one that is worth buying you do need to lay down some cash.
And by (2) I don’t mean $25 for a pocket pussy, I mean over $100 for one of those “Realistic” or “Ultra-Realistic” (note those code words!) vaginas, something that you place on your bed or something and actually have sex with in a standard fashion (ie - thrusting).
If warmed up in water before use, yes, they feel very realistic.
Actually, I did a bit of researching last night. The Fleshlight seems to be quite recomended. It is about $10-$15 more than we were looking to spend, but if it can actually be used, well hell, it’ll probably be worth it. It even looks kind of perverted (as long as you don’t get the plain version) so it has the look we’re going for. We’ll probably have to order it over the internet as the sex-stores we have in our city aren’t exactly the best stocked. I am just debating if I should get it sent to the office or home… I don’t know which would be worse/better if the wrong person opens it!
It is not a “piece of plastic” - it feels, well, not like a woman, but not like plastic. It feels nice. 
And it works very well, but it does take time - they recommend you warm it with water first - which does make a huge difference.