I seldom use Lionel figures: occasionally but a lot of them are way too big. I have the same problem with a lot of figures provided with 1:43 dioramas and such - they look out of scale.
I use lots of both Bachmann and Woodland Scenics figures and consider the two companies' offerings equivalent in quality and look, which means I prefer the Bachmann due to a usually lower price. From time to time I go trolling for figures on various internet websites and buy whoevers figures are cheapest so that i always have a hundred or so assorted figured here: most I repaint/reposition arms and legs, etc.
I will add: I prefer Woodland Scenic accessories for figures: pushcarts, garbage cans, tools, and such, to those provided by Bachmann (and to those from Lionel, too), but in the figures themselves Bachmann is about as good as it gets in my book. I also occasionally use Preisser (expensive but very good) and Artisa (interesting when they look good and fit), etc., and I use K-Line by Lionel seating people (I have several hundred unpainted in a box somewhere, yet to use) which are closer to 1:64 in passenger cars and seated inside buildings, as they fit well.
You can look at some of my recent postings, particularly on all my detectives. Almost all those figures are mixtures of Bachmann and Woodland Scenics and frankly I forget which I started with. More than a few will be a mixture in each character - a Bachmann body with a Woodland Scenics arm grafted one because it is in the right pose, etc.