Ah, as far as toys, I was a huge collector. I still have most of my old G1 stuff, but also have bought all the US released G1 reissues, as well as a few Japanese ones, like Megs. I have virtually all the Beast Wars, Beast Machines, RiD(probably my favorite line), Armada, Engeron, Cybertron, Classics, Generatsion, Titaniums(the transformable ones, & a few of the non TF ones), Universe, US Masterpiece(& Megs), Alternator's, Animated, the first Bay movie figures, & some Machine Wars.
Animated is the last main line I decided to collect all the characters for, as I just can't do the combo of $ & lack of space. I didn't bother with the 2nd & 3rd Bayformers, aside from a couple that are pretty sweet. And obviously I haven't been collecting Prime, with exception to Airachnid(a female Decepticon, I had to). I'll probably get a Prime & Megs of the Prime show eventually.
As far as Beast Wars in general goes. I used to have a hot blood passion of hatred for the show. I remember crying out something along the lines of "this isn't MY Transformers, this sucks!". However, around when Beast Machines came out, I noticed that the final form BW Megs took, was a Dragon. I love Dragons, & I love Transformers. So, that opened an avenue for me. Plus, since it's in the same timeline as G1, I started to take some interest in the show. Eventualy, I ended up loving the show, & most of the figures. A few G1 characters showed up(like Ravage & Starscream), but most were new(even if a bunch of them has stupid names, like Dinobot). Probably my favorite character in the show was Dinobot, & his struggle with being naturally born of the warrior class(where all con's initially came from in G1), but disagreeing with that era's Megatron. He was incredibly noble, & in some ways even reminds me a bit of Cyclonus, who also had a noble side to him shown in the Killing Jar episode.
Anyways, BW isn't for everyone, but, like I said, I used to loathe that show, & now I love it. My favorite TF shows are G1 & BW. The other one's just haven't done it for me, though, people seem to rave about Prime. I have the first season on Blu ray, but havn't finished it yet.