They want to grow into a $200 million company a year and have a great reputation locally for decades.

A house is a house; they are fairly simple things; and any reputable tradesman should be in and out in 1-3 days unless you're doing a 100% gut to the studs and re-plumbing/rewiring the entire house. 

Most tenants understand that actions bring consequences and the vast majority of tenants are responsible people just like most LL are. 

Can someone recommend a good title company that has a good reputation working with real estate investors?

However, I have a "side" business in which I buy and sell vacant land and it was difficult for me not to take out the money and deal with the tax consequences.

Building relationships with tradesmen takes time so you are either going to overpay for a general contractor with a strong reputation or risk getting burned subbing out the individual trades to people you don't have a history with.The other big question is what are your income requirements? 

I'm not here to debate whether I should use one or not.Now here's where I'm at today: a good friend of mine is a reputable contractor whose done hundred of quality renovations.

For those derive tax benefits from cost seg, it's a "no brainer" if you can work with a reputable and cost-effective firm. 

Hello, I need suggestions on reputable Philadelphia-based GC's or avenues to find them.

Check with others on their reputation and double check during the DD process that you are receiving what's advertised.