Sightstone vs Yellow Trinket
Wanting to get some opinions on how people feel about this...
First and foremost, if you're supporting, you should certainly have 3 of your 3 wards out as often as possible, there's no denying that. The only exception is in the beginning when you don't have the ward supply just yet. It's also advised to have a pink ward out as much as possible since it acts like a 4th ward and can help removing enemy wards.
Now lets look at the contenders: Sightstone - 800 gold Pros- Semi-unlimited ward supply, Frees the trinket space, can be purchased before level 9 Cons- slightly expensive early game, takes up an item space, must be refueled at base
Yellow Trinket - 250 gold Pos- Semi-unlimited ward supply, frees the item space, inexpensive Cons- must wait till level 9 to get it, takes up the trinket space, must buy pink wards
Comparing Sightstone's ability to place 3 wards immediately vs Yellow Trinket's 2 wards if they are both charged: I can't say I find myself in situations where I NEED that 3rd ward now. I find them both equal in this aspect.
Comparing Yellow Trinket's timed ward storage vs Sightstone's limited storage that is refueled at base: I feel like Yellow Trinket wins this one. As I said with the 3 wards vs 2, I really don't need all 3 right away, and they are stored quickly enough that I can comfortably have all my wards out at once. In Sightstone's defense, It's infrequent that I'll be away from the base long enough to spend the 4 limited wards and need more, but it does happen.
As for Pink wards: Sightstone lets you have free pink wards for your trinket, whereas you have to spend 100 gold to buy one if you're using the yellow trinket. That trinket does take up an item slot before its used... this is primarily an issue if you need it and have 6 items. Sightstone wins this argument. In Yellow Trinket's defense, you don't need to have 6 items at a time unless you're build is entirely complete, and most games end before that point.
Life before level 9: Unless you're getting wrecked in lane, you should be able to buy sightstone on your first return to base, making your warding life much easier, and lets you opt for Red Trinket to disrupt your enemy's vision. Waiting for level 9 to have your semi-unlimited ward supply doesn't restrict you because you can still buy regular wards and utilize the Yellow Trinket's pre-9 wards, though they may be short. If you and your Marksman are working together with trinket wards, you shouldn't need to buy that many wards before you hit level 9.
I think that about covers all the elements of warding... So which is better?
, which increases your ward supply and HP.