Rc35's are definitely an option - lot of them around and the innards are still available. And you can mix and match steerer tubes and fork crowns between 1 1/4 1 1/8 and 1".
Trouble is they still command good money - around £75-£100 depending on condition.
As long as you're willing to pay its probably your safest long term option as you could always get a spare set of elastomers and keep them safe somewhere dark and they'll probably good for 10 more years.
To sum up - rc35's great flexible option.
Alternatives - post an ad in the wanted section for a 1" threaded fork (measure your head tube for the length and add a bit). Also post your frame size as it helps people estimate the steerer length for you.
I reckon if you are not too fussy you'll get something for <£50.
I wouldn't bother going ahead/threadless - the choice at 1" isn't much greater to warrant changing stem and headset as well.
Unless of course you get the upgrade bug
- then Retrobike is your oyster - just watch that wallet.
Current Bikes - Dekerf Team SST
, 98 Birdy Blue, 93 Orange Prestige, 93 Vit T
, Dropbar Pace RC200 F7
Gone :'00 Orange Mr XC
, Dekerf Mountain
WANTED : ** Orange spotty shorts **