Just starting out SUPing I've decided to go for a Laird Soft Top but I'm undecided on what size would be best for me, I have a lot of paddling experience, not so much surfing experience.
The 11' is 27" wide The 12.1 is 31" wide (there is not stock of the 11'6, but that's still only 27' wide anyway)
As DJ said Hartzy welcome to the forum mate, i think if you can you should demo both and see what feels the best. The 12'1'' at 31'' wide would definately be a good starter as it would be very stable and make starting out a lot more fun. Hope this helps.
Just in case it helps your decision, the Laird 11'6 is 29" wide. Right in the middle of the two sizes you were considering if you're undecided on a Laird. I liked it when I paddled it. I'm about your weight. Link attached:
'P co' mentioned the NSP 11'0 - DJ posted some photos of it a while ago, He was going to paddle it and post his opinion here but I don't think he's got round to it yet. It looks a nice board also. I have heard it's a very good price but not sure exactly how much. Maybe P co can let us know?
11' NSP is $1295 and comes with a leggie and nice glass centre fin at that price. Well worth a look. I haven't used one yet but Longboards Scarborough will be using them as hire boards this summer.