incidentally -- i forgot to add that i have a sub2k in 9mm and i think it's great. i have one that accepts the glock-type mags (the most common variant), however i do not own a glock pistol. the mags are readily available and relatively cheap so although i don't get to enjoy mag compatibility with my pistol, it's still worthwhile in my book.
clearly the thing that sets the sub2k apart from the rest of your choices is its compactness and ability to fold. i ordered mine without ever actually holding one (they're basically impossible to find in shops around me), so when i picked it up at my ffl it was my first time to see it in person and actually hold it. i knew it was small and compact, but when they took it out of the box it still surprised me. it's light and tiny, but still manages to feel quite solid and sturdy.
these benefits don't come without a price, as you do have to trade off some comfort. it's a bit uncomfortable to get a good cheek weld and the bolt does come back with a bit of a whack that takes a bit to get used to -- it's not at all painful or 'bad', just different. it's also little awkward to work the bolt if you need to cycle it or lock it back. your first few rounds will no doubt feel weird as you find what position to hold and shoot, but after a mag or two you figure it out and get used to it. it does tend to maul the brass so if you're a reloader that might put you off.
when you have some 33rd mags loaded up the main downside is you'll be having so much fun that you'll go through a ton of ammo before you know it. not that that's a bad thing. also, if you go to a busy range, you'd be surprised how many people know about the sub2k and are interested, but never seen one since they're so rare in the stores -- you'll get comments and inquiries, which will no doubt lead to people wanting to shoot it, and them offering you to shoot what they've got. it's a good conversation starter as well as being just a ton of fun.
anyway, as you can tell i love mine -- it's great quality and for the price is an excellent value. if you've got the money, just get one, you won't be disappointed.
clearly the thing that sets the sub2k apart from the rest of your choices is its compactness and ability to fold. i ordered mine without ever actually holding one (they're basically impossible to find in shops around me), so when i picked it up at my ffl it was my first time to see it in person and actually hold it. i knew it was small and compact, but when they took it out of the box it still surprised me. it's light and tiny, but still manages to feel quite solid and sturdy.
these benefits don't come without a price, as you do have to trade off some comfort. it's a bit uncomfortable to get a good cheek weld and the bolt does come back with a bit of a whack that takes a bit to get used to -- it's not at all painful or 'bad', just different. it's also little awkward to work the bolt if you need to cycle it or lock it back. your first few rounds will no doubt feel weird as you find what position to hold and shoot, but after a mag or two you figure it out and get used to it. it does tend to maul the brass so if you're a reloader that might put you off.
when you have some 33rd mags loaded up the main downside is you'll be having so much fun that you'll go through a ton of ammo before you know it. not that that's a bad thing. also, if you go to a busy range, you'd be surprised how many people know about the sub2k and are interested, but never seen one since they're so rare in the stores -- you'll get comments and inquiries, which will no doubt lead to people wanting to shoot it, and them offering you to shoot what they've got. it's a good conversation starter as well as being just a ton of fun.
anyway, as you can tell i love mine -- it's great quality and for the price is an excellent value. if you've got the money, just get one, you won't be disappointed.