I've been living in Lemon Grove for four years now. I have to say I've been quite happy. You'll know you're in Lemon Grove when you see the giant Lemon! It is located near San Diego, and shares the great weather of most cities near SD. So be prepared for cool weather all year round, and summers hanging out by the beach.
The cost of living in the best areas in Lemon Grove can be a little bit on the high side, so apartments might be a good option. And while employment opportunities may seem lower than some other cities, there are still some good work options. Not the best school systems around either, so if you have little ones and care about their education, you might want to look elsewhere.
I think my favorite part of living in Lemon Grove is how close you are to great restaurants and shopping. Coops West Texas BBQ is a personal favorite, and as I mentioned before, you are close enough to San Diego to get some great weekend shopping in. Overall, I'm happy here, and I plan on being here for at least another three years.