Both guns have their pluses and minuses.
Main differences:
Tanfoglio has checkering on front and back straps, but it it hit and miss, quality-wise. Checkering on a CNC machine shouldn't have run-overs, uneven lines, etc. and it offends me when they do, having checkers way too many 1911's by hand. CZ has a texture, but I wouldn't call it checkering. I have some coarse grip skate tape on mine and it's fantastic.
Tafoglio has an adjustable rear sight. CZ is fixed though an adjustable factory option exists. The Tanfo adjustable is only great when you are adjusting load recipes. After that they tend to gain elevation as the screw walks out in recoil or the leaf pin breaks off and and the whole leaf flies away. Fixed sights require a lot of deliberate work to make them break. I've never seen one do so.
Tanfoglio has a little larger mag well opening than the CZ.
Tanfoglio beaver tail is a little larger than CZ and the bottom of the trigger guard is flatter. This may or may not matter to you in terms of ergonomics.
Tanfoglio trigger is ok and can be made better, though not as good as CZ's. CZ triggers can be absolutely amazing. This is because the tanfoglio mainspring is much shorter so it stacks up quicker, leading to a feel of loading up as the trigger is stroked through the double action arc. The CZ mainspring is much longer and doesn't stack. In fact, the exact opposite; is lets off quicker. Tanfoglio gets around this with a lighter spring, but then you have intermittent light primer strikes.
There is also more friction is the tanfoglio fire control setup. There is a huge drag surface on the trigger plunger which you can feel in the stroke. CZ solution to this is you use spring steel to loft the trigger stirrup, which reduces friction massively.
Tanfo's have a nicer finish and are a little longer in the nose, giving more recoil dampening up front.
Design quirks:
Tanfoglio safeties just suck in my opinion. The detent plunger that holds the left hand safety in place in the frame breaks off consistently because it is under designed. This is a pressed in part so when it breaks you need a new safety.
CZ safeties are much more durable but a pain in the ass to remove and reinstall, until you do it a few time then it's no biggie. First time, do it inside a big zip-lock bag....
I've had several Tanfo's (not stocks) and worked on many dozens. I won't own another. I now have an SP01 Shadow that does everything I want it to do at a little over half the cost. I love it. There is an awful lot of value in those guns for the money.
Good luck with your selection. If you can, try them both and decide.
RE