We had 2 LR90s... a full length 177 and a carbine 22. My wife liked the carbine more because it was a little lighter and more compact. She campigned it successfully for several years for FT in Open class plus occasional rabbit and squirrel hunting. Wonderful rifles. They are old school Daystates... literally miniature Huntsman's from that era. High gloss bluing and mostly walnut stocks. Impossible to wear out as long as you don't open bolt fire. Triggers were the same as the Huntsman standard, not the competition ones. I've not owned a Mako and there was a competition model, so it might have had the lighter trigger. The 177 long was our first pcp, circa 1992 or 1993. It's probably my biggest regret for selling. I did acquire a Huntsman Mk2 in the ultimate completion of that deal and THAT has no regret... still have it. I won a large number of matches with it and still looks and shoots like new.
Value is a tough one... they really will be difficult to wear out so as long as cared for well, they will shoot and look nice for a very long time and not much will out shoot them, within their intended power levels...
Bob