Jewellery acquirement is bad. The chance of a randart doesn't increase when you recognize more jewellery, stop making things up. Acquired noise and inaccuracy are 92.09% randarts, other jewellery is 28.85%. It's basically only better than armour acquirement if your armour is already perfect, or you have every jewellery type identified except faith/protection/evasion/slaying or something like that.
Misc acquirement is strong now and is probably better than armour acquirement even after you have the good misc items identified. Still not as good as wand though (nothing is, except for early game weapon acquirement, and food acquirement with Fedhas).
Book acquirement is poor, and is especially poor if it gives you a manual. The chance of getting a manual for a skill you want is not good; there are a lot of skills, and having 0 in a skill doesn't make its weight 0. Also, fighting, armour, spellcasting, invocations, and evocations get constant bonuses (even if they are useless with your god), probably a remnant from victory dancing.
If you do go for a manual despite this, you should have your desired skill at 11 to maximize its weight (it increases with floor([skill level]) until 12, at which point it instantly drops to the same weight as level 10, then continues decreasing and reaches 0 at level 25). The chance of actually getting a manual for it is still shit - assuming you aren't a felid and can't afford to train your unwanted skills to 22+, the best chance you can get for a manual of fighting is a little over 20%. For a skill not on that constant bonus list, it's a little over 15%. That's actually worse odds than getting randart jewellery, and that's if you have that skill at 11 and all others at 0, and are with Trog. I would say wand, armour, and even jewellery are much more rewarding in pretty much any conceivable circumstance.
daggaz wrote:Im not sure but I have the feeling that jewelry has higher chances of rolling extra egos? Seems that way. Also if it is 'cursed' you dont have this ridiculous high chance of getting a total into-the-trash-it-goes negative AC malus, no matter how awesome the rest of the armour is. Instead, it will usually be something like a pip of -rF or -MR, or one of the new maluses in trunk, the idea there being they are supposed to be more manageable and encourage a difficult choice rather than "the RNG could just as well have kicked me in the nuts instead".
This isn't how any of this works.