I've never used either Thornton or Horner but want to try something a little different for me at 1B and am thinking these two would fit a HR park like Riverfront. I never liked Horner's 4e29 at 3B but just noticed that he's an acceptable 4e15 at 1B.
In Thornton's favor, as I now see it:
1. More durable
2. More walks, so higher OBP
3. Better defense: 3e10
4. Kills lefties
In Horner's favor:
1. More balanced, platoon-wise
2. Seems like he has a lot more BPHR (odd, because he's in Atlanta and Andre's in Cleveland, but there it is.)
3. More HR per at bat.
Neither seems to have a really bad year on their card, though I find that both tend to be dropped pretty quickly if they don't hit right away, maybe because there are so many 1B options at this price level. Thornton has two big years, Horner just one. Horner's years seem more even, though--solid all around.
I think I'm leaning toward Thornton but have already changed my mind a couple of times. Your advice/experience would be welcomed. Here's the team if you want a look. Should score some runs if I get decent years:
http://fantasygames.sportingnews.com/baseball/stratomatic/80s/team/team_other.html?user_id=80865
One other factor in Thornton's favor is that there are currently five LH *SPs in my division and my team has a bit of a lefty-hitting tilt, with Straw, Whitaker, Nettles and Daniels in the lineup. Even RHB like Fisk and Murphy and switchhitters like Singleton can favor RHP. A couple of times I've had teams where even the righties hit righties better, and it's really hard to get a team like that to balance. So having a guy who kills lefties might be good.
Also available at the moment is my usual cheap 1B standby, A Davis, plus Simmons, who can play first with OK def, and Bonilla, who is starring for me at DH on another team. Simmons at 1B and Fisk at C is an interesting idea, though, again, I sort of like Thornton's durability. (Taken, currently, are all the usual 5M+ 1B suspects, plus Durham, Kruk and G Davis.)
I'm still chewing on this, obviously. Any ideas or comments would be much appreciated.