And I'm the tie-breaker.
Really, what some people have said is absolutely true. If you are not experienced with XRumer, then you are not going to be able to use it. Using XRumer *correctly* is a time consuming learning experience. SENuke is easy, you can install it, watch a couple videos and poof, you work in SEO now. It's cute.
Now, if you want to do what most people end up doing (IMO, because they do not understand the program in full and give up on learning it after they figure out how to load a list and click start), it's easy. Just go download a free link list, plug it in, tell it what to link to. Snap. Even better, you don't have to buy XRumer for this low quality campaign, you can pay $5.
However, if you're really interested in creating a quality link campaign and you learn to use XRumer to its full potential (outside of forum spam, I always get a chuckle when people insinuate that XRumer is only good for big dick pills), then really, by comparison SENuke X is so adorable. All cute and fuzzy, pink and cuddly, I just want to give it a big hug and make sure it gets on the school bus OK.
Not to say SENuke X is bad, it's great. But if you want to go for rankings in a competitive niche, there's simply no alternative. Now, if you use XRumer in conjunction with other tools or even your white hat campaign... Now you're cooking.
Rule 1: Never link to your homepage.
Rule 2: Don't download link lists. If you use XRumer, do your own lists. Always.
Rule 3: Spin absolutely everything but the password. Usernames, about me, everything.
Rule 4: Don't spam forum POSTS. That's just not cool, IMO and there are better ways to introduce your links to Google.
Rule 5: Don't just blast every link you find. Test every link you find. Blast the best.
If you follow those rules, your campaign will be solid gold. Also, please be weary about advice and suggestions you read about XRumer (funny to say after all that so far, eh?), you will hear a lot of opinions from people who have never used it or have a lot of theories about it.