Slicer - I got the 615 for x-mas, used it to slice bacon once and I returned it because of uneven slices, and I knew it was not going to hold up for how much I plan on using one.  Friday, I got a entry level commercial slicer, and am in love with it. Let me know if you want more info.

Grinder, I inherited my grandfather's who had a meat market from the 50's - 1990. I think I put a whole calf in it and it would grind all but the head.

I bought a 1949 Globe commercial model slicer from a craigslist ad. About $100 as I recall. I have owned cars that weighed less than this beast. Time to sell it as I virtually never use it. Like many things seen around here, seemed like a good idea. Think about how much you'll use it before you possibly waste your money.

I got an advanco SL310.
http://www.webstaurantstore.com/avantco-sl310-10-manual-gravity-feed-meat-slicer-1-4-hp/177SL310.html

There is a store near me that had them for $310, so I walked out with one.  Comes with a sharpener, and when I used it on Sunday on an eye roast, it was the best roast beef I ever had. Since I had it out, I sliced chicken breasts, some stick pepperoni, veggies....  anything and everything I could think of that was around, and I was very impressed. It was also able to shave meat a lot thinner than the 615. The size of the thing is about 2X the size of the 615, but about 50% the size of what you see at your local deli.
Think deli quality and ability, but downsized with no plastic. 

Here's my Globe. Check CL if you're interested in something like this. And have room to leave it out. It is NOT portable!

^^^^ that thing is huge. Im sure it slices well though. 

I have the LEM #12, 3/4 horse and it's great.
The STX sure has more bells and whistles. And has great reviews. ..

On the slicer, I have seen many past posts about people dumping the serrated blade on the 615 and getting much better results with the smooth blade.

My brother just bought the 615. It has great reviews on Amozon. 

Used a Kitchen Aid grinder attachment for the last year and then wife gave me a dedicated Weston #8 grinder (http://www.westonsupply.com/Weston-8-Heavy-Duty-Meat-Grinder-for-Home-Use-p/33-0201-w.htm) for Christmas.  Much better. Grinds meat much more consistently and quite a bit quicker. Highly recommend a good stand alone.  The one you are looking at is even bigger/stronger so should be a beast.  The #8 will grind pork as fast as you can shove it in with out bogging down.  Will say that it is a lousy stuffer though, has to much power and when you pull back the stuffer ram the vacuum crated pulls the meat right back out of the casing since you can not keep constant meat flow going.  Shopping for a crank cylinder stuffer now