Upgrade to Skylake?

[JustTom12]

I currently have an FX-8350 and have finally decided it's time to upgrade to the Intel side, I'm selling my PS4 for £200 and can sell my current cpu and mobo for about £130 so my upgrade budget is around £330. At the moment I have 3 options in mind but 2 are more viable than the other one so here they are:
Option 1: i7 4790k - £200, MSI Z97 PC mate - £65, Keep current RAM, Hynix 250gb SSD - £45. Total - £310
Option 2: i5 6600k - £170, AsRock Z170 Pro4 - £92, Sell current RAM and get DDR4 - £0-10, Hynix 250gb SSD - £45. Total - £317-327

These are the two most compelling options I have found. Both have their own benefits with option one giving me twice the threads and although I don't use many multithreaded apps more games are taking advantage of this. However the i5 6600k offers better core performance and the ddr4 memory giving me more future proofing but lacks the hyperthreading benefit. The i5 also offers me better future upgradability with the ddr4 memory and I can also upgrade to an i7 6700k in the future. Both will be a considerable upgrade from my current cpu.
Option 3: i7 6700k - £270, AsRock Z170 Pro4 - £92, RAM £0-10. Total - £362-372.

This is less viable as the price is high and there is no SSD benefit that I can buy with my budget and I don't have one currently.

So I was just hoping for some opinions on what option I should take as I am really struggling to make a decision as there are benefits to both.

 

[Eliasand]

I would go for the i5-6600k. The upcoming Kaby Lake CPU's will most probably use the same 1151 socket, so there's your upgrade path if you want to upgrade in the future.

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-6600K 3.5GHz Quad-Core Processor (£199.96 @ More Computers)
CPU Cooler: CRYORIG H7 49.0 CFM CPU Cooler (£26.49 @ Ebuyer)
Motherboard: Asus Z170-P D3 ATX LGA1151 Motherboard (£80.11 @ Amazon UK)
Storage: Patriot 120GB 2.5" Solid State Drive (£37.19 @ Amazon UK)
Total: £343.75
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-03-21 18:49 GMT+0000

 

[synphul]

With prices being so similar I'd probably opt for the i7 build. There really is no real 'upgrade path' when you think about it. Unless going from an i3 to i5 or i7, updating to the newer version just to have whatever is 'new' one gen apart is a complete waste of money. By the time anything really changes the socket will have changed as well meaning a new motherboard. It's not like it used to be where you could keep the same motherboard and upgrade the cpu to several newer versions.

Even now many i5 2500k users waited for skylake. Which means they skipped the i5 3750k, 4670k, 4690k, 5675c and skipped an entire lga 1150 socket completely. One generation apart is more of a sidegrade or efficiency improvement than anything. The 4790k is a stronger cpu than the 6600k, has faster clocks out of the box and has hyperthreading.