I think the "chainsaw" mossberg is rediculous too lol. But I'm not going to play thought police and tell you what to do with your money.
I went with a mossberg thunder ranch. It has a 12.75" length of pull, a tri-rail forend, breacher barrel (tacticool to some, I like it). I considered the 870 too but Moss Pawns video on youtube swayed me towards the mossberg.
I do like the regular synthetic stock 870's a lot though. Magpul is making a stock and forend now for the magpul and it looks pretty sweet.