gruggier, are you a fan of the type or just the NYC Js?
There's actually several outstanding hudsons left.
My favorites...of which one survives...are/were the NKP's hudsons. I prefer their appearance to that of the NYCs...which was rather similar due to the Van Swerigans ownership of both railroads a few years earlier. The NKP's were the first production run of hudsons...on the floor of the erecting shop at Richmond when the 5200 was completed. Doyle McCormick, the chief man behind the SP Daylight, when asked if his PA-1 will be his last project, he stated that he'd love to work on the surviving NKP hudson. Also, Jerry Jacobson, whom owns the Ohio Central, offered to restore a steam locomotive at St Louis just for a lease on the NKP 170...I have a link to it in my sig.
There's also a Santa Fe Super Hudson...it had 84" drivers...it's as large as a small 4-8-4, and really lives up to the billing as a super hudson.
There's also several Burlington hudsons and an older santa fe hudson. One of the Burlington hudsons was purchased by the Illinios RR museum in operational condition.
The C&O 490 in Baltimore is streamlined and it's the most powerful surviving hudson...49,000lb of tractive effort. It was rebuild from a pacific...but it is pretty much a new engine.
Then there are several surving Canadian hudsons...some rather nice engines.
Here are some notable deceased hudsons to look up:
C&O L-2 class hudsons. They were absolute monsters. When built, they already had an L-1 shop goat, so they designated them L-2s...by the time the streamlined hudson rebuilds took place...the L-1 shop goat was gone, so the L-1 designation was applied to the knew hudsons.
The Santa Fe's streamlined Blue Goose.
The Milwaukee Road's F-7s. These engines were the definition of fast passenger power. They also bore a beautiful streamling. They followed up on what were probably the last 4-4-2s ever built...No 1, 2, 3, & 4...which were built in the mid-'30s specifically for the Hiawatha...they were really pacifics that had the middle driver removed to make room for larger drivers
EDIT: Nachoman, I don't know how familiar you are with them, but Bowser makes a Pensy 4-4-2, MDC makes a 4-4-2 that is a decent AT&SF engine, and Mantua also offers an atlantic.