How does one navigate collecting TF nowdays??

This is probably a silly question to the fans who have been around forever, but I'm just getting back in after a couple decades off and I am REALLY lost in the maze that has become Transformers.
My first Transformer was Vintage Optimus Prime back in '84 with megatron following close behind... TF were never my FAVORITE line (that was He-man) and at their price, my parents didn't get me more then 8-10 I think... but I always loved the image of them. Seeing some of the G1 Stuff nowdays has started pushing me to grab a few favorites again.
Everywhere I look I see the same characters, with different sizes and scales and designs, usually listed with codes that arent' very intuitive...
For example, A couple years ago, I picked up the classics version of Hound w/Ravage and Hot Rod and an alternater Prowl... Then masterpiece Optimus Prime came out and he was just huge...
Now I picked up the Masterpiece 'year of the horse' Optimus and his size is smaller then masterpiece but bigger then the figures I had (which I need to dig out of storage now...) Now I've picked up Masterpiece Prowl, who is smaller then horse Prime... but still fairly in scale. I mean, Prime should be taller then the average bot...
Now I'm starting to get a bug for some of my old time favorite G1 figures, but having a bear of a time figuring out who is 'in scale' with who?? Is there a G1 megatron that is in scale with Horse Prime? I saw one, but it looked like it was too big and on scale with the early giant Prime... For that matter there was G2 (I think) masterpiece starscream right next to Horse Prime at TRU, but he seemed massive too... and not my favorite 'style'...
Now I see all a dozen sub-lines, and words like voyager deluxe and legendary... but I'm not sure what they mean... It looks like this is a collection to get online... but there seem to be a dozen companies making cool looking figures, but I'm not seeing any sizes or heights, and at THIS price... I don't like guessing.
I'd love a Devastor that was massive... and G1 inspired,
Is there some sort of website or tutorial or size comparison chart that is out here that may help some new(er) guys.
My first Transformer was Vintage Optimus Prime back in '84 with megatron following close behind... TF were never my FAVORITE line (that was He-man) and at their price, my parents didn't get me more then 8-10 I think... but I always loved the image of them. Seeing some of the G1 Stuff nowdays has started pushing me to grab a few favorites again.
Everywhere I look I see the same characters, with different sizes and scales and designs, usually listed with codes that arent' very intuitive...
For example, A couple years ago, I picked up the classics version of Hound w/Ravage and Hot Rod and an alternater Prowl... Then masterpiece Optimus Prime came out and he was just huge...
Now I picked up the Masterpiece 'year of the horse' Optimus and his size is smaller then masterpiece but bigger then the figures I had (which I need to dig out of storage now...) Now I've picked up Masterpiece Prowl, who is smaller then horse Prime... but still fairly in scale. I mean, Prime should be taller then the average bot...
Now I'm starting to get a bug for some of my old time favorite G1 figures, but having a bear of a time figuring out who is 'in scale' with who?? Is there a G1 megatron that is in scale with Horse Prime? I saw one, but it looked like it was too big and on scale with the early giant Prime... For that matter there was G2 (I think) masterpiece starscream right next to Horse Prime at TRU, but he seemed massive too... and not my favorite 'style'...
Now I see all a dozen sub-lines, and words like voyager deluxe and legendary... but I'm not sure what they mean... It looks like this is a collection to get online... but there seem to be a dozen companies making cool looking figures, but I'm not seeing any sizes or heights, and at THIS price... I don't like guessing.
I'd love a Devastor that was massive... and G1 inspired,
Is there some sort of website or tutorial or size comparison chart that is out here that may help some new(er) guys.