@tiggerlily, most stores in Soler are closed on Sundays. Baka yung big stores lang ang open. Sayang naman because there are good finds in small stores.
Soler Street and T. Alonzo Street have very good prices. We got fab finds at incredibly low prices at that big store in the orange building at the corner of T. Alonzo and another street (not Soler). We got our round "drop" light for the dining room for a ridiculous P5000 (in Decor at Ortigas Home Depot, it costs P12000) and kitchen drop lights for P350 each, in Dwell Eastwood, that costs P5000/set of 3 lights. Cheaper because in the latter, aluminum and not stainless steel ang material used. But since it's purely for decorative purpose, go na kami. Nice no?

The owner/son of owner gives a discount for bulk purchases so we got our lighting fixtures for the bed and bath rooms here, Fiam brand. We got the kaha lang and replaced the bulbs with Philips energy saver bulbs. Super cheap lang, around P500-800, but they look more expensive ha. May discount pa. We went here 2x when we were moving to our house last year kasi mura talaga.
There's a small shop along Soler that sells nice lights for the garden (yung naka-stand and yung naka-mount sa wall) plus modern-looking chandeliers and lighting fixtures. I forgot the name, starts with an "I" and we got our lights for the garden there. They said Dingdong Dantes got his lights for his condo (the one featured in Yes!) from them. Malapit this store sa Arranque Market. Basta, go there. It has an attic and I found the chandeliers really nice, not the old style na pang-Malacanang ha. Modern or may twist. Nice and classy. Looks more expensive than it costs. I'll check my receipt for the exact name of this store.
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Itre is the name of this particular store, thanks happy_pomelo. 
Sa Ortigas Home Depot, we got from Luxen our big modern chandelier-type light for the staircase landing and sa Light Arts our modern cubist type lighting fixture for the living room - we rarely use this though because the light bulbs are halogen. Ouch sa electric bill. Luxen and Light Arts have branches at Soler too but according to the sales girl, same pricing lang.
Sa MC Home Depot along Ortigas Avenue naman, we got most of our outdoor lights, for the garage, gates and posts.
For lamps, I like Keystone Lamps, though hindi pa ako nakakabili here.
We got Philips energy saver light bulbs naman to put inside the main kaha and for the mood lights para tipid sa electric bill. From Wilcon naman.
I do not like A & S. I find the lighting fixtures there "palasak" na. Basta, hindi ko type.

There are other stores offering more updated looks for a cheaper price.
Tip ko lang for Soler goers. Get an early bird discount by going to the stores as soon as they open. They think it's buenas kasi so take advantage of that.