Well, I upgraded my Reeflo 250 a couple of days ago. Mine was one of the first originals with the AO Smith motor. I just felt like the skimmer could do a little more than it was, although I wasn't disappointed with the purchase. My review of the Reeflo 250 vs my dual NW GEO is a few pages into the original thread.
The upgrades are a new Dart Gold (Baldor) and the upgraded cup, both from Mike at reefspecialty. By the way, I'd like to mention the fact that Mike left me a voicemail at home in addition to a couple of email and phone conversations during the process. Quality product and support going the extra mile without a doubt :thumbsup: I look forward to his needlewheel info when it's available.
Pump:
Although the AO Smith motor is a good motor, it definitely has some downsides in comparison to the new Gold (Baldor). There is quite a price difference between the two though. My AO Smith ran at 160-170 degrees WITH a fan installed on top of it. The same fan installed on the top of my Baldor sets the pump at a lukewarm 112. I saw a max of 125 without the fan, and 130 when stressing the pump to it's max (closing the venturi). That's a pretty significant drop in temperature. Airflow also had a decent jump in performance with the new pump. I need to find my airmeter and check the stats, but when I suck RO/DI water through the tube, I see at least a 25% increase in "sucking speed" over the AO. It's likely the air meter will register similar results. Watts aren't too bad at this point, hovering around 145-147.
Although I'm very happy that Reeflo moved to the Baldor on all new units, it is unfortunate that many of us off the first shipment got the AO. Basically I invested another $200 (price - sale of old pump) in what people get now for free. You can't fault a company for trying to improve a product, but it does make those of us that originally invested early a little ... I'd say irritated or cheated (not mad, not angry, just irritated). Overall either way, still an awesome skimmer regardless.
Cup:
:lol: ok, 'nuff said.
No really, my first though wasn't "WOW THIS IS HUGE" like most have posted, my first though was actually wondering if I needed to upgrade my utility sink in the basement to be able to clean it.

(luckily it fit, but barely heh) It's a significant jump in size over the stock cup. Doing some acrylic work myself, the work is pretty solid. The engraving in the top is a nice feature, very little bubbles in the glue joints, the edges are very clean and smooth indicating a nice sharp bit, no chips or dings at all, and the packaging is downright crazy. Granted the cup is not cheap, but you won't have any concern about it getting there in one piece. Cup surrounded by sytrofoam, in box #1, syrofoam, box #2.
The ONLY downside (and it's minor in my opinion) is the fact I don't really like the drain. I personally would have much rather had a tapped hole. That would allow the end-user to install a quick connect (better than the current in my opinion), valve for shutting in on/off, or whatever else they would like. Granted it was complete out of the box with no additional parts, but possibly just an idea for future changes to the product.
Performance upgrade with the cup and pump:
I need to give this a little more time, but initial readings look really really good. There are a few caveats 1) My skimmer had been running for day one, with no cleaning other than the cup (performance really never went down so no need to), however the unit got a full vinegar bath. 2) The skimmer was offline for two days as I waited on the parts (which were shipped quickly I might add). 3) I increased the flow from roughly 300 to roughly 450ish through the skimmer due to it's ability to handle it.
What I will say is, the first shot below is within one hour. That's how quick the skimmer came back to life with a new cup, new pump, and not having run for a couple of days. The second shot is roughly 24 hours later, chugging along nicely. Again, I'll have to report back in a few weeks, but things look VERY positive. The power-on overflow issues I was seeing are also fixed with this cup.
One hour after turn-up
Roughly 24 hours later
Did I mention it was big? (ReefSpecialty's cup installed, stock Reeflo above, Octopus cup above that).
Additional size help for those that haven't seen it in person. That's a Tunze nano stream, which is about the size of a female's fist or so. As well, those are 4x4 cedar posts directly behind the cup.
We say, THANK YOU Mike!