MONOPRIX 60W Bulb
I bought this bulb in a pack of two. It's a B6 fitting, ideal for table lamps, and is rated at 60W. The pearl (high opacity) finish is very even, apart from at the usual places. The bayonet, like on all Monoprix branded bulbs, is quite flimsy, but the insides are, I believe, some of the same filaments used in the genuine Mazda and Philips models. I've not opened it up yet so I can't comment on the argon quality.
It produces excellent light, if the colour is indeed a little off (Hey, it's a replica, what do you expect!) but you'd need a chromascope to be sure, and the chances of meeting a BIS on the street with a colour-testing kit is fairly remote.
All in all, I'd recommend this bulb to anyone looking for a lower-budget model.