This comes down to money so let me address a few points. I deal with this on a regular basis.
- How much do you want to spend? You can go to the big box stores and buy various components relatively cheap and make them work together. It won't be the greatest set-up but it will work.
- If you want multiple heads, go Grohe or similar. Grohe provides good value at the price compared with some of the other high end stuff. It won't fail, you'll be happy and there are tons of options.
- Forget the body jets, nice buy overrated and only worthwhile if you have real good pressure
- Consider a rain head (ceiling head) and shower bar set-up this is a very nice combo; you could also go rain head and standard wall head combo as well. If this is a bigger shower with any type of bench the bar with head on hose is much nicer; you'll need a volume controller - 3 way minimum and a regulator (temperature valve) Grohe does make a single temp/volume body but you are better off with separate controllers
- If money isn't an issue you could go with one of the prefab Grohe multi-head wall units, very very nice at Festool + prices, if you know what I mean
- If you only have 1/2" at your HWT, especially if its old galvanized I would suggest factoring in some new piping to upgrade to 3/4"
- You can get by with 1/2" but remember, if its old galvanized there hasn't been 1/2" clearance on the inside for decades
- Don't let anyone talk you into 3/4" valve ports, 1/2" valve ports are fine, the 3/4" ports only really make a difference in a pumped system or new, nice piping
- If you are actually in the City, PEX is NOT allowed. Only copper or galvanized for supply piping
- Depending on the age of the house you could have a 1/2" lead main but that is rare and only in certain neighborhoods. My guess is you have a 3/4" lead main (the most common) possibly a 1" depending on location. 1/2" to/from the tank means someone cheaped out at some point. Once again, I strongly suggest you upgrade a bit
- These are my two primary suppliers Remodelers Supply on Pulaski and Community Home Supply on Lincoln; I've also got a few others that may be helpful depending on your criteria. Give me a call or email and I'll give you some more info.
- Oh, and just in case you don't know any better, please don't put in one of those stupid, designed to fail tile shower bases unless you spend the money on Schluter or Noble products.
And yes once again, we don't allow no stinkin' plastic pipe in this town.