4x100k Experience Reward

[Determinate]

Hunter - no, you can lvl that with effigies later
Prayer - yes, it has a pretty high gp/xp ratio, though training is fast
Farming - no, easy and cheap to train so long as you know what you're doing
Summoning - yes, charms take a while to collect so your xp/hr is very limited; also has pretty high gp/xp ratios.

96-99 mage won't get you enough charms to get 99 summoning.

 

[speedster]

I would choose Runecrafting if I were you...

 

[rspro11]

Summ or farm. You didn't list herblore, but I would also consider that. Costs a lot and if you don't already have overloads, that would be a nice little boost.

 

[Li0n]

I just finished 'While Guthix Sleeps' and I have 4 100,000 experience point lamps to spend on any skill over 65.

What's the best way to spend these points? Keep in mind I'd rather spend money than spend time. I was thinking one or more of the following:
Construction (expensive, takes a while)
Hunter (I DESPISE hunter, and it's so time consuming)
Prayer (expensive and time consuming)
Farming (extremely time consuming)
Summoning (expensive, time consuming, annoying)

Cheers in advance for posting your advice

definitely farming bro.