Yes...I know...budgets are easily expanded to fit one's eyes...in this case this particular set-up is well within it...$575 is only $25-75 more than the cheapest i3 I've seen, and it comes with 8gb vs. 4 found in the i3 systems, itself alone worth the difference...
...and the more I write about it the more I think I should pull the trigger on THIS one...it's on NewEgg a very good reseller
....though I did have good luck 7 years ago with Tigerdirect when I complained that they sent me a new pc that had a broken front cover hinge (to the inputs) right out of the box...thinking back, that was a petty claim, but at the time I thought, it could mean worse inside...nonetheless they sent me a new one in a week...
I STILL use that Sony VAIO as my DVR, which records SD only, but the HD recordings I've made still look great to me, even at standard quality recording level....though when I record SD broadcasts (to watch shows that have commercials I skip), I record in HQ to minimize degregation...
The only other consideration is upgrading to a modern photo quality LCD...my old 22" crt has 2 pc inputs so I can switch between the Sony and the other pc...and at 22" it has a lot of real estate that would be matched only by a 24" wide screen monitor...and as I said earlier, I can use my 50" HDTV for web surfing...which is very convenient, and comfortable...
My Canon kit 450D/s90; Canon lenses 18-55 IS, 70-210/3.5-4.5....Nikon kit: D610; 28-105/3.5-4.5, 75-300/4.5-5.6 AF, 50/1.8D Nikkors, Tamron 80-210; MF Nikkors: 50/2K, 50/1.4 AI-S, 50/1.8 SeriesE, 60/2.8 Micro Nikkor (AF locked), 85mm/1.8K-AI, 105/2.5 AIS/P.C, 135/2.8K/Q.C, 180/2.8 ED, 200/4Q/AIS, 300/4.5H-AI, ++ Tamron 70-210/3.8-4, Vivitar/Kiron 28/2, ser.1 70-210/3.5, ser.1 28-90; Vivitar/Komine and Samyang 28/2.8; 35mm Nikon F/FM/FE2, Rebel 2K...HTC RE UWA camera