Hmm....I'm just hearing about this rifle for the first time. I was leaning towards an LTR in the future but this sounds to be about the same thing for about $300 less. These are the differences that I can see, let me know if I missed anything or got anything wrong.
_________LTR_______SPS (tactical)
Action....Chro-Mo...Stainless
Barrel.....Chro-Mo...Stainless
Fluting......Yes...........No
Stock........HS.........Hogue
Bedding....Block........Pillar
Finish......Parked.....Bl Oxide
I think that I'd prefer a stainless rifle anyway, the stock is pillar bedded so it shouldn't be too bad, can easily be swapped out, sounds like a lot of guys ditch the HS stock off their LTR's so I'm sure they can be picked up in as new condition for relatively cheap.
Basically, If you plan on having some work done to it anyway, you're better off using the SPS as the base. I'm not a precision, bolt action, kind of guy so let me know if I'm off base here.