I have one lace front wig, synthetic, black. I payed some 90 bucks for it, or so. It's definitely high enough quality for me. When I bought it it was hip long and very thick, so it wouldn't stay on my head without some wig tape, cause it was so heavy. So that's something to keep in mind: some lace front wigs, if very long and thick, can be too heavy to stay in place without something gluey between it and you.
I did however give mine a haircut, and reduced its mass by probably two thirds. It's now shoulder-blade length and thinner but looking better than ever and is light-weight enough to stay on my head without the tape. However I do secure it with lots of hair pins, as well as securing the wig cap with hair pins. Cause for some reason the wig cap slids off my head, and taking the wig with it, if I don't secure both with bobby pins, into my real hair and each other. The elastic around the wig is adjustable and even when I tighten it to the point of giving myself a headache, it doesn't help keeping it in place on its own. Maybe it's just my head that's weirdly slippery...
The way I go about putting it on is: brush through my hair (it's shoulder length), tie it up in a low bun, put on a wig cap and stuff in all the fly-around hairs and the bun. Then secure the wig cap with 5-6 bobby pins. Putting on the wig next and brushing it through, then securing it with 4-6 pins in the same colour as the wig and also try to hide them into the hair a bit. Then brush it through again and make sure it all looks good and neat.
However I plan on getting my head shaved in a few days (cause my hair is very damaged, ugly and I hate it) and after that's done I'll likely have to go back to using wig tape for securing my lace front and/or the wig cap. Unless I can figure out some other method.
As for the lace showing though, mine only shows very little as it's very close to my skintone in colour, so it only shows as a slight difference in texture. I don't put makeup on it to conceal it and it does fool people. Several people have told me they thought it was my natural hair and that they'd never even guess it was a wig until I told them. I show the lace part of my wig in a middle parting.
For wigs with bangs I don't bother with lace front, cause then the hairline doesn't show anyway.