Being properly objective, with 0-5, with 5 being flawlessly good, non of the 1st 10 Trek films are 5*. That said:
TMP: 3.5 (DE 4) - a proper 70's scifi epic with beautiful production
TWOK: 4.5 - indisputably a cultural icon and a classic
TSFS: 3 - good follow up to TWOK, but a bit crap out of context from the previous film
TVH: 4 - good fun
TFF: 3.5 - it's a guilty pleasure if, like me you ignore the plot holes
TUC: 2.5 - a bit dull and the little shortcuts and cost cutting spoil it a bit for me
GEN: 2 - I got bored, it's a poor start for the TNG crew.
FC: 3.5 - good action film, well acted and fun
INS: 2 - I can see what they were doing, but it might have been better as a TV film
NEM: 1 - a huge shame given the talent, ruined by rampant egos
For completeness '09 is a 4, STID is 2.
TMP: 3.5 (DE 4) - a proper 70's scifi epic with beautiful production
TWOK: 4.5 - indisputably a cultural icon and a classic
TSFS: 3 - good follow up to TWOK, but a bit crap out of context from the previous film
TVH: 4 - good fun
TFF: 3.5 - it's a guilty pleasure if, like me you ignore the plot holes
TUC: 2.5 - a bit dull and the little shortcuts and cost cutting spoil it a bit for me
GEN: 2 - I got bored, it's a poor start for the TNG crew.
FC: 3.5 - good action film, well acted and fun
INS: 2 - I can see what they were doing, but it might have been better as a TV film
NEM: 1 - a huge shame given the talent, ruined by rampant egos
For completeness '09 is a 4, STID is 2.