I have played both, I liked one and didn't like the other. That doesn't make one better than the other, it makes it different.
I got into FI and liked it because it stopped me from smashing £5 a time into skybet, and meant I wasn't just losing bets on stupid named footballers to score first
I initially liked FS, but after a very short time realised that I was getting too involved in it, and was just constantly churning through money and quickly ended up cashing out with pretty much no profit and deleting the app because I could easily see myself getting addicted. I won't partially opt out from certain parts of it, like I won't change to just drinking advocaat if I was drinking too much. That's my choice and others are free to do what they feel best for them.
My concern is that some may be reliant on either FI or FS. The most vocal advocates on the forum of FS have been former FI users who seem to base their enjoyment on how much they win. For me, even with reduced liquidity, I find FI still fun and that is whether I am up or down currently( and for both platforms, you aren't really either until you have cashed it out)
It seems to be the main selling point listed on FS is that people can make money on it. And maybe those people were only on FI because it was always easy to make money. It's now got harder, but that doesn't make it any less fun for me.
I can watch a game between promotion rivals in second tier of football and get really excited, or watch a player I have never heard of playing well and can have a look whether they are on the index (normally not, but sometimes!)
I also genuinely think it has improved my football knowledge to the point where my friends come to me asking me what I think of a South America footballer who has been linked to their club.
In the end, choose one, the other, both or neither. Just make sure you have fun and you aren't just enjoying it because at this current time you are making money. they are all gambling and the house will almost certainly win.
Also fuck off with creating threads about FS on an FI forum. We know it exists, have probably made our choices, so dump it on Reddit or call yourself a animal on twitter and start chatting shit
Mouko(FI Tarsier if I was one of those wankers)