I've had ALL THREE on my vehicles over the years and below are my experience in terms of your question regarding heat rejection and quality. I'm just a consumer and rely on the info by the experts on this board. There's plenty of good info by @DynamicAppearance and others regarding these three films in the search database.
F1 Pinnacle: I've have Pinnacle 35 (VLT) on my wife's Mazda minvan (all windows; no windshield) for 6 years now and it's a rock solid in terms of quality. It's charcoal color has been unchanged throughout the years and I liked it's clarity without any hazing. As for "heat rejection" - I've not been impressed with it over the years, especially after I've experienced Huper Ceramic and 3M Crystalline on my two other vehicles.
3M Crystalline: I had CR70 on my Subaru sedan (all windows + sunroof + windshield) for two years and it's a durable thick high quality film. My only qualms with it is the color differences between the shades; the darker VLTs have a brownish bronze tint while the higher VLTs are has this hazy blue to it. It's looks good from the inside but from the outside there's a definite hazy bluish tint to it. As for heat rejection, I can't rave enough about it. Even at the 70 VLT, I could sit in car on hot summer days and not feel like I'm roasting. It's that good and worth every cent if heat rejection is your top priority
Huper Optik Ceramic: I have C70 on my Audi sedan windshield and sunroof and C50 on the side/back windows. I chose the Huper over the Crystalline simply because I wanted a different color tint than Crystalline. It has, IMO a rich classy reflective look to it I've not seen on other films. The quality is very high, no scratches, no hazing and durable over 1 year so far. It's heat rejection is noticeably less than Crystalline but greater than Pinnacle. It was a happy medium choice for me to choose Huper for the looks over the performance.
In terms of heat rejection, you have to be careful about asking this question. If you are measuring TSER - Total Solar Energy Rejected ("The percentage of total solar energy rejected by filmed glass"), all these three films measure similarly. What you should look for is the IR - Infrared Rejected specs ("The percent of infrared light rejected by the film on the glass. Infrared light is primarily responsible for the heat you feel when driving.")
I'm thoroughly astounded by Crystalline's 97% IR spec across the line. I could sit in my previous Subaru sedan with just 70% VLT coverage on all windows on a hot day and not feel like the sun is burning me. Sure it was hot but a nice toasty feeling, not a sunburn feeling you get from the sun through glass sitting or driving at one focal point. I love Huper's appearance but I can't deny Crystalline having a very noticeable bump with Infrared Rejection! I'm very surprised IR spec is seldom talked about on this forum and won't even consider films that don't list them in their specs (I'm talking to you Formula 1 and Suntek!).