wow thats a tough decision.
i would chose based on:
1st sentimental attachment.
2nd what fits with my interests.
3rd what would be the hardest to replace (price/rarity/condition)
with zero attachment i would chose the M1D cause its a M1D
the forestry carbine cause its just cool.
after that it would be a toss up between the steyr the 1888 and the ljunhmann. all interest me. if the steyr was still in 8x50 it would win, otherwise?
note, while i would happily own any of those rifles i'm not overly interested in mauser 98s. i love lee enfields but would pass on the sporter unless it is something really interesting as sporterized smle's are
not hard to find or overly interesting as is.