I'd like to raise my handlebar a bit so that I have a more upright position when riding. Right now, I have a Ritchey stem that's 90 mm with 10 degree rise. I sure would like to get a stem with a higher rise, but at the moment, I'm not too sure how high a rise would be ideal for me.

So, I'm considering getting an adjustable stem, but not any of those that cost too much because I plan to get a more permanent stem later on when I've finally decided what rise suits me. But then again, I was thinking, if the adjustable stem fits quite well, then I may not have to buy a fixed stem anymore.

Which brings me to my questions: how durable are those adjustable stems? I'm thinking more on the level of the Nashbar adjustable stems because they aren't too expensive. Anybody has any feedback on these adjustables? Are they worth it? Are they any good? Or do you guys suggest they they be used temporarily only until rise dimension is finally decided upon?

I'd appreciate all the input I can get.

Thanks.