Here's a table that can help you.

Light Tints. Sorted by TSER, Highest to Lowest.
Name VLT TSER Comment
Solar Gard LX 25 30 65
Huper Optik C30 30 63 Ceramic
Huper Optik C35 34 61 Ceramic
Solar Gard LX 40 39 60
Platinum ELG 35 32 57
Huper Optik C40 40 55 Ceramic
Sunbloc Carbon 30 36 54 Neutral, Ceramic
3M BC 35 36 53 Metallic
Solar Gard HP Charcoal 32 32 53 Grey, Hybrid, Semi-reflective, Brownish
Sunbloc Ultimate 35 37 53 Neutral Bronze, Ceramic
Solar Gard HP Charcoal 38 36 53 Grey, Hybrid, Semi-reflective, Brownish
V-Kool K28 28 52 Bronze
Solar Gard HP Quantum 28 32 50 Netural, Metallic
LLumar CTX 30 34 49 Ceramic
LLumar CTX 35 37 48 Ceramic
Solar Gard HP Quantum 37 37 48 Netural, Metallic
V-Kool K37 37 47 Bronze, Metallic, Greenish
3M BC 40 42 47
Platinum MDN 30 25 47
Solar Gard HP Supreme 30 30 46
V-Kool OEM 35 40 46 Grey, Dyed
LLumar ATR 30 34 44 Metallic
LLumar ATR 35 37 44 Metallic
Solar Gard UP 30 34 43
3M CS 35 39 40 Neutral, Dyed
Solar Gard HP Smoke Plus 35 38 40 Grey
3M FX ST 35 33 37
LLumar ATC 30 33 36 Dyed
LLumar ATC 35 38 35 Dyed
Solar Gard NR Smoke 35 31 33