Surprises:I have 3
1. Santa cruz blur xc, surprised me how 'bike' like it felt after years of riding hardtails and trying a few rather disappointing full suspension bikes. Shouldn't have sold it especially as it's replacement was the most disappointing bike I have ever owned.
2, Orange Elite (2011), test rode one as couldn't find much else out there that I liked, that I could afford, after disaster with my 'disappointment' bike, thought it would be too a little short feeling esp with very short stem fitted to test bike, it felt fine. Also thought that it wouldn't be that confidence inspiring on the descents especially after years of riding full suspension, so much better than I could have imagined, felt I was descending with the same confidence as when i had the blur. Ordered the frame at the end of the test ride.
3, pompino, just bought it cheap 2nd hand to get about town on, really loved that bike, even if it was built up with shoddy parts and the toe straps where death traps. Wish I never sold it to buy a road bike.
Disappointment: Giant anthem x, after reading all the reviews, thought this would be my ideal bike, certainly looked like it on paper, but never got on with it. For me, it descended slowly and badly (thought it was me for a long time till I switched bikes) and climbed badly, wasn't even that comfortable. No matter how much I spent on it both time and money, it still felt terrible. Sold it after a year and received an email from the buyer saying how much he loved it! Shows that a 'good' bike is totally subjective.