My team almost entirely runs KJW P226s, no issues with any of them.

Not even any mag issues?

Its pretty easy to fix a kjw mag...plumbers tape.

Is the KWA P226 trigger assembly harder to clean/ build than a KJW P226?

Like my post said, this entirely depends on you.
'Reliable' is completely 100% dependent on how well you care for your gun, full-stop.
'Accurate' is completely subjective, and again, dependent on how well you maintain your gun.
All mags will leak eventually.

Where will you be using this? Is it a backup for outdoor play, or are you going to try to Sam Fisher everything?

There's always mag issues. That's easy enough to fix, though. They can also run marui mags which are a bit tougher.

I end up using my pistol a lot, and I like to maintain my pistol, I find it a fun pass-time.

I play outdoors.

for accuracy I guess I meant range.

At the field I play at we have minimum engagement distances, which lead me to haave to use a pistol for engagements within 20 feet.

Furthermore I'm not only talking about mags leaking I'm also talking about the feed lip breaking which happened on two of my WE glock magazines.

Aaaah, okay.
In this case I'd recommend the KJW. It'll do what you want, it's inexpensive, and as said before, the mags will work with a TM if you decide to build something real fancy later on. It just hits all the marks for dollars-to-doughnuts.

The KSC/ KWAs are sweet, you won't be making a bad choice if you buy one, but I'm all about practical and penny pinching. Any time you can share mags between guns is a good time, so that wins it for me personally. Too bad my hands don't like Glocks.

i've heard mixed things about KSC/KWA's accuracy, mainly related to "meh" hop-up units.

i've have a trade'd KJW but I remember the finish to have been average