Just watch out with QRZ if you use it as your sole log, it charges you to export your own data. If you do really want to use QRZ I would suggest uploading a copy of your log exported from a "proper" logging program.
I use QRZ linked to LOTW (If you do that your confirmation rate goes way up). On track to do about 2000 (digital) QSOs this year - Have had great fun chasing awards like the ones for grid squares/countries/continents. Wish I had done it sooner, too!
I was going to suggest you uploaded your log to clublog to join in the club tables but didn't realise it wasn't easy to export your data from qrz.com
Just also to note, quite a few logging programs can upload to QRZ directly. Just stick your QRZ credentials in and they can do it after every QSO or at a set time. So it needn't be a manual job. Same goes for ClubLog and LoTW - many programs can upload direct to these places too for confirmation.
Ham Radio Deluxe HRD is what I use and from that can export log (or link to) LOTW, Clublog, QRZ. Also import contests in to HRD. Plenty other options I am sure. 73
Since licenced I have kept a paper log. I transfer it to HRD when I am actually operating as well. I then export my HRD logs (new contacts only as an ADI file) I then import that file into QRZ.com, QRZCQ, EQsl, LOTW and Club Log. I also use Winlog32 which I think is great as my master log. It also holds our contest logs and also Club Event logs. The three are all separate databases. Ok maybe a bit of overkill but that's what I do. So in all my logs every single QSO I have made is there.
Paper logbook.. saves switching on the PC.
I've kept a pc log since 1997 now using N1MM for my main station log and every QSO uploads to my clublog account so essentially my logs backed up in the cloud too. Club Log syncs both ways with LOTW too so my official DXCC is kept up to date. But im a bit of a log geek