GMAT Strategy

Anyone familiar with the powerscore series? I had PR and found out it was a waste of money, then I got MGMAT all 8 books, which is great for math and for verbal too, but I think they could use some improvement on the verbal section. Everyone is praising Power Score series for a verbal section here. Im tight on money and every dollar counts. Im contemplating to study for LSAT after im done with GMAT, so if I order Power Score series for LSAT and one of their guides for sentance correction, do you think it will do the job? Are the GMAT and LSAT Power Score guides different (aside from sentance correction obviously)? Does anyone know? Also I know a few people on this blog studying for LSAT as a preparation for a verbal section on the GMAT. If you tried it, can you comment on how its working out for ya?

Thanks!