I recommend reading the comic, but it's pretty hard to find, I've just checked ebay, amaxon, the book depository, abe books, kings comics, my comicshop.com, just one
listing came up and it's not even for the
diamond edition thought the extra pages from that are probably in the complete release of the allspark almanac. Phantom zone and the Liverpool comic shop don't have search engines.
It's the only fiction available for these characters so it might help you with picking favorites. the jackpot figure from the subscription service is nice but it has no associated fiction that I'm aware of.
I like the 5 stunticons myself, they are all different in appearance to the original toy design, the new heads help really well but they also have great paint jobs. the ones without new heads are painted differently enough to make them look very distinct.
I think the autotroopers are a cool idea and I like the design of that mold. but as a set of 3 there's a lot of white.
the attendee figure Fisitron is very nice but I have a soft spot for that character ever since I got the G1 version as a kid.
The Toxitron is just a repaint but the character is kind of entertaining, super gaudy colours that somehow work.
the sideswipe is probably the least interesting to me, my only attachment to G2 sideswipe is the super sexy vehicle mode of the masterpiece. the character in the comic though is pretty cool and plays a fairly major role.
Minerva is pretty awesome but I'm biased again because I made her myself.
edit > oh and the cheetor is pretty neat, a great concept that translates pretty well.
I hope that's some help. if you want any clarification let me know, I have some of them on display at the moment so I should be easily able to take a few photos if you would like to see something particular.