Here's my experience with the Ultra Tour.
I have been playing with a set of three Yonex DR 98s (285g version) with a bit of weight in the trap door (321g, 32.4cm balance, 318 SW, strung w/ overgrip). I broke one of them a few weeks back when it slipped out of my hand while serving, and since I can't find a replacement, I've been looking for a new racquet. The Ultra Tour seemed like it might be pretty close in specs, and reviews say it's comfortable. I wasn't sure about the 18x20 pattern, but I thought it might help my string situation. My arm can't handle poly, and my favorite nylon string, TF Multifeel, doesn't last very long in my DR 98s.
I ordered four UTs, figuring I'd play with one and return the others if I didn't like it. The specs were pretty far off on all four racquets, but they were fairly close to each other. The one I chose was in the middle of the four. It was 310g (vs. 305g spec) with a balance of 30.5cm (vs. 31.5cm spec). Strung with TF Multifeel 16 (at 2 lbs less than I string the DR 98s and figuring it settled a bit lower due to new grommets), it was 327g, 31.73cm balance, and 307 SW. For comparison, TW's strung average is 323g, 32.41cm, and 319. Obviously, mine are very light in the hoop and heavy in the handle. Perhaps the heavy handle is due to them being size 5.
For the first playtest, I added 4g at the tip, to get the SW up to 319, and an OG, which brought it to 337g. It felt heavy and I lost accuracy on my shots. It didn't hurt my arm, but it has a tinny vibration, similar to a Head MG Radical OS that I have. When I switched back to the DR 98, I much preferred the weight and buttery smooth feel (a phrase I often see in UT reviews) of it. I tried playing with the UT again, with the 4g removed, but it still didn't feel right.
So, looking through this thread, I saw
@moon shot's post showing the weights at the top of the molded handle. That's exactly where I needed to reduce mass to get to my DR 98 specs, so I ordered a TK82S pallet. Removing the stock handle was easy enough, but getting the Head pallet installed was a bit of a challenge. The hairpin is slick! I didn't find anything that would stick well to it, and the pallet was a bit loose. I ended up wrapping a layer of masking tape around the hairpin at the top and bottom. The tape stuck to itself well enough to hold it in place. Then, I wrapped masking tape, without overlapping, from the top to the bottom of the hairpin. I added three layers per side of masking tape to the short sides to get a nice fit with the pallet.
The Head pallet doesn't work very well with the transition from hairpin to throat. I wish I would have cut a half inch off the top of the pallet and shaped the inside of the pallet to match the transition of the racquet. Unfortunately, I cut it to length before figuring this out, so the handle feels significantly shorter than the stock handle. Also, the TK82S in size 5 is quite a bit smaller than the Wilson size 5. A Wilson size 4 butt cap fit perfectly, but I decided to build up the pallet with a bit of masking take and stick with the size 5 butt cap.
The molded grip and weights were 48g, so I was confident that I'd be able to meet my target specs. After putting everything back together, I added 4.6g at 10:00 & 2:00 and 5.4g in the trap door to match my DR 98s perfectly.
I hit with the ball machine today to compare the modified Ultra Tour to my DR 98s. Dropping weight and moving to a much more polarized weight distribution felt great. I was much more accurate with the Ultra Tour than I had been prior to the modification. I could switch between the two racquets and feel mostly confident in my shots. I was still more consistent with the DR 98, which isn't surprising, since it's what I'm most used to. The Ultra Tour still felt tinny.
Bottom line, I could switch to the Ultra Tour, but I don't love the feel, and the modifications are too much of a hassle. Anyone have a 285g DR 98 with 4-5/8 grip? ;-)