Go For IT
Haro makes a great long lasting product. You will be happy with it. Just get a bike thats sized correctly.
I have a Haro Escape 8.2 (hardtail) and a Werks XLS. The Werks XLS is more of a Pro model than the R series bikes. But with my experience with Haro has been a positive one. They are strong, great welds, the dropouts are designed well and also reinforced. You said that you already have a component group to put on the R3. You should check BB size and headtube length, seat tube,check the front dr ect. for example I beleive that R3 will use a integrated headset. When I removed my stock WTB headset and replaced it had to with a FSA orbit Z.Domdil said:
Haro makes a great long lasting product. You will be happy with it. Just get a bike thats sized correctly.