silent hunter : best version ?
 

playing sh3, how do sh4 and sh5 compare ? thanks

They are all now just costing a few pounds/dollars/dinar/pesos each - get them all and try them, only you will know which you will like. For the record I stuck with 3, didn't like 4 (but didn't really give it a chance), and 5 looked great but again it's still not been given the chance by me yet.

Honestly, I can't recommend SH5.
Even with mods it is an unstable, buggy and glitchy mess.

I got so frustrated playing it, I went back to Aces of the Deep and now I'm happy as a puppy.

SH4 is good from what I remember, but if you wanna go U-Boats, SH3 is probably still the best with one of the bigger mods/mods at all.